title: The cell masses in the brainstem of the South African clawed frog Xenopus laevis: a topographical and topological analysis.
mesh_terms: D000818:Animals; D001933:Brain Stem / Q000033:anatomy & histology*; D003391:Cranial Nerves / Q000033:anatomy & histology; D005260:Female; D009046:Motor Neurons / Q000648:ultrastructure; D009412:Nerve Fibers / Q000648:ultrastructure; D009434:Neural Pathways / Q000033:anatomy & histology; D009474:Neurons / Q000648:ultrastructure; D009847:Olivary Nucleus / Q000033:anatomy & histology; D011903:Raphe Nuclei / Q000033:anatomy & histology; D012154:Reticular Formation / Q000033:anatomy & histology; D013116:Spinal Cord / Q000033:anatomy & histology; D013681:Tegmentum Mesencephali / Q000033:anatomy & histology; D014278:Trigeminal Nuclei / Q000033:anatomy & histology; D014982:Xenopus laevis