title: Fine structure of cells in embryos chimeric for mutant genes at the T/t locus.
mesh_terms: D000818:Animals; D002678:Chimera; D004622:Embryo, Mammalian / Q000648:ultrastructure; D005804:Genes, Lethal; D005808:Genes, Recessive; D005855:Germ Layers / Q000648:ultrastructure; D051379:Mice; D008817:Mice, Mutant Strains / Q000235:genetics; D008854:Microscopy, Electron; D009154:Mutation; D010641:Phenotype; D013997:Time Factors