title: Electron microscope studies of conditional spore cortexless mutants of Bacillus sphaericus.
abstract: Spore cortex of conditional cortexless mutants of Bacillus sphaericus 9602 was not detectable by electron microscopy unless the medium was supplemented with meso-alpha,epsilon-diaminopimelic acid during sporulation. Other spore structures appeared normal. Spore shape was quite irregular in the absence of meso-alpha,epsilon-diaminopimelic acid.
mesh_terms: D001407:Bacillus / Q000502:physiology / Q000648:ultrastructure*; D003470:Culture Media; D003960:Diaminopimelic Acid; D009154:Mutation; D013171:Spores, Bacterial / Q000648:ultrastructure
chemical_list: D003470:Culture Media; D003960:Diaminopimelic Acid