title: Sporeless mutants of Bacillus thuringiensis. II. mutants derived from var. thuringiensis and var. sotto.
abstract: Three sporeless mutants of Bacillus thuringiensis, 2 derived from var. thuringiensis and 1 from var. sotto were selected after mutagenic treatment. They were completely lacking in ability to form spores, yet maintained intact insecticidal activity.
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis / Q000648:ultrastructure; D012831:Bombyx; D009154:Mutation; D010572:Pest Control, Biological / Q000379:methods*; D013171:Spores, Bacterial