title: Scanning electron microscopy of aggregates of cells from normal embryos and lithium-induced exogastrulae of Xenopus laevis.
mesh_terms: D000818:Animals; D001001:Anura; D005855:Germ Layers / Q000187:drug effects / Q000648:ultrastructure*; D008094:Lithium / Q000494:pharmacology*; D008855:Microscopy, Electron, Scanning; D014981:Xenopus / Q000196:embryology*
chemical_list: D008094:Lithium