Iudina T G, Mil'ko E S, Egorov N S
Mikrobiologiia. 1996 May-Jun;65(3):365-9.
Endotoxins of Bacillus thuringiensis subsp. tenebrionis produced an antibiotic effect on three out of the four species of micrococci tested, showing an activity of 10-23 units/mg, comparable with that of bacitracin. The R variants of Micrococcus luteus were more than twice as resistant to the action of delta-endotoxins as cells of the S and M types. Enhanced growth of the tested microorganisms at concentrations of antibiotics large enough to inhibit the growth of the S and M variants, but insufficient to suppress the R-variant, was shown to be determined by the intense development of the latter variant.
苏云金芽孢杆菌亚种tenebrionis的内毒素对所测试的四种微球菌中的三种产生了抗生素作用，活性为10 - 23单位/毫克，与杆菌肽相当。藤黄微球菌的R变体对δ-内毒素作用的抗性是S型和M型细胞的两倍多。在所测试的微生物中，在足以抑制S型和M变体生长但不足以抑制R变体生长的抗生素浓度下，其生长增强被证明是由后一种变体的强烈发育所决定的。
