title: Transformation in group H streptococci: blackburn strain transformable mutants.
abstract: Transformable mutants of the nontransformable Blackburn strain group H streptococci have been isolated. In contrast with the wild strain, the cell surface extracts of these mutants contain the factor inactivating deoxyribonucleic acid in vitro.
mesh_terms: D000362:Agar; D000818:Animals; D001769:Blood; D004269:DNA, Bacterial; D003851:Deoxyribonucleases / Q000378:metabolism; D006736:Horses; D009153:Mutagens; D009154:Mutation; D009604:Nitrosoguanidines; D010936:Plant Extracts; D013291:Streptococcus / Q000201:enzymology / Q000254:growth & development; D014170:Transformation, Genetic
chemical_list: D004269:DNA, Bacterial; D009153:Mutagens; D009604:Nitrosoguanidines; D010936:Plant Extracts; D000362:Agar; D003851:Deoxyribonucleases