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    Dauer Comparison : 4d6d

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0009792) embryonic development ending in birth or egg hatching [0,0]
                                 > (GO:0043009) chordate embryonic development [0,0]
                                       > (GO:0021915) neural tube development [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001838) embryonic epithelial tube formation [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001840) neural plate development [0,0]
                                             > (GO:0001839) neural plate morphogenesis [0,0]
                                                   > (GO:0001841) neural tube formation [0,0]
                                                         > (GO:0014021) secondary neural tube formation [0,0]
                                                               > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0014021) secondary neural tube formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0035148) lumen formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032501) multicellular organismal process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0048731) system development [4, 0]
                           > (GO:0007399) nervous system development [4, 2 ]
                                 > (GO:0021915) neural tube development [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0009792) embryonic development ending in birth or egg hatching [0,0]
                                 > (GO:0043009) chordate embryonic development [0,0]
                                       > (GO:0021915) neural tube development [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001838) embryonic epithelial tube formation [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0009790) embryonic development [16, 16 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001840) neural plate development [0,0]
                                             > (GO:0001839) neural plate morphogenesis [0,0]
                                                   > (GO:0001841) neural tube formation [0,0]
                                                         > (GO:0014021) secondary neural tube formation [0,0]
                                                               > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0014021) secondary neural tube formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0035148) lumen formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0007275) multicellular organismal development [59, 5 ]
                     > (GO:0048731) system development [4, 0]
                           > (GO:0007399) nervous system development [4, 2 ]
                                 > (GO:0021915) neural tube development [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001839) neural plate morphogenesis [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001840) neural plate development [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0035239) tube morphogenesis [0,0]
                           > (GO:0001838) embryonic epithelial tube formation [0,0]
                                 > (GO:0001841) neural tube formation [0,0]
                                       > (GO:0014021) secondary neural tube formation [0,0]
                                             > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0035239) tube morphogenesis [0,0]
                           > (GO:0014021) secondary neural tube formation [0,0]
                                 > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0035239) tube morphogenesis [0,0]
                           > (GO:0035148) lumen formation [0,0]
                                 > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001839) neural plate morphogenesis [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001840) neural plate development [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                     > (GO:0048646) anatomical structure formation involved in morphogenesis [2, 0]
                           > (GO:0035148) lumen formation [0,0]
                                 > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009790) embryonic development [16, 16 ]
                     > (GO:0009792) embryonic development ending in birth or egg hatching [0,0]
                           > (GO:0043009) chordate embryonic development [0,0]
                                 > (GO:0021915) neural tube development [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009790) embryonic development [16, 16 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009790) embryonic development [16, 16 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001839) neural plate morphogenesis [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0009790) embryonic development [16, 16 ]
                     > (GO:0048598) embryonic morphogenesis [0,0]
                           > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                 > (GO:0001840) neural plate development [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048646) anatomical structure formation involved in morphogenesis [2, 0]
                     > (GO:0035148) lumen formation [0,0]
                           > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001838) embryonic epithelial tube formation [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0002009) morphogenesis of an epithelium [2, 2 ]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001840) neural plate development [0,0]
                                             > (GO:0001839) neural plate morphogenesis [0,0]
                                                   > (GO:0001841) neural tube formation [0,0]
                                                         > (GO:0014021) secondary neural tube formation [0,0]
                                                               > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0014021) secondary neural tube formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0035148) lumen formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001838) embryonic epithelial tube formation [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001839) neural plate morphogenesis [0,0]
                                             > (GO:0001841) neural tube formation [0,0]
                                                   > (GO:0014021) secondary neural tube formation [0,0]
                                                         > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0048598) embryonic morphogenesis [0,0]
                                 > (GO:0016331) morphogenesis of embryonic epithelium [0,0]
                                       > (GO:0001840) neural plate development [0,0]
                                             > (GO:0001839) neural plate morphogenesis [0,0]
                                                   > (GO:0001841) neural tube formation [0,0]
                                                         > (GO:0014021) secondary neural tube formation [0,0]
                                                               > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0009653) anatomical structure morphogenesis [12, 2 ]
                           > (GO:0048646) anatomical structure formation involved in morphogenesis [2, 0]
                                 > (GO:0035148) lumen formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0021915) neural tube development [0,0]
                           > (GO:0001841) neural tube formation [0,0]
                                 > (GO:0014021) secondary neural tube formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0001838) embryonic epithelial tube formation [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0014021) secondary neural tube formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0035295) tube development [0,0]
                           > (GO:0035239) tube morphogenesis [0,0]
                                 > (GO:0035148) lumen formation [0,0]
                                       > (GO:0014027) secondary neural tube rod cavitation [0,0]

   > (GO:0008150) biological_process [543, 0]
         > (GO:0032502) developmental process [0,0]
               > (GO:0048856) anatomical structure development [0,0]
                     > (GO:0048731) system development [4, 0]
                           > (GO:0007399) nervous system development [4, 2 ]
                                 > (GO:0021915) neural tube development [0,0]
                                       > (GO:0001841) neural tube formation [0,0]
                                             > (GO:0014021) secondary neural tube formation [0,0]
                                                   > (GO:0014027) secondary neural tube rod cavitation [0,0]