title: Appearance of antigenic material in gastrula ectoderm after neural induction.
mesh_terms: D000818:Animals; D000941:Antigens; D002454:Cell Differentiation; D004475:Ectoderm / Q000276:immunology; D007106:Immune Sera; D007122:Immunoelectrophoresis; D009420:Nervous System / Q000196:embryology*; D011817:Rabbits / Q000276:immunology; D014981:Xenopus / Q000196:embryology*
chemical_list: D000941:Antigens; D007106:Immune Sera