title: Fine structural features of hind limb development in Xenopus laevis.
mesh_terms: D000818:Animals; D003094:Collagen; D004475:Ectoderm / Q000166:cytology; D006614:Hindlimb / Q000166:cytology / Q000196:embryology; D014981:Xenopus / Q000196:embryology*
chemical_list: D003094:Collagen