title: A scanning electron microscopic study of the appearance and localization of cell surface material during amphibian gastrulation.
mesh_terms: D000557:Ambystoma / Q000196:embryology*; D000818:Animals; D004622:Embryo, Mammalian / Q000378:metabolism; D004625:Embryo, Nonmammalian / Q000648:ultrastructure*; D006025:Glycosaminoglycans / Q000378:metabolism; D009024:Morphogenesis; D013499:Surface Properties
chemical_list: D006025:Glycosaminoglycans