title: Old protocols, as do old habits, die hard.
authors.affiliation: Environmental Toxicology Program, N.I.E.H.S., Research Triangle Park, North Carolina.
authors.forename: E
authors.initials: E
authors.lastname: Zeiger
mesh_terms: D000818:Animals; D005799:Genes, Dominant; D005804:Genes, Lethal; D051379:Mice; D009152:Mutagenicity Tests / Q000379:methods*; D051381:Rats