Jensen N E, Berg B
Acta Vet Scand. 1980;21(4):617-24. doi: 10.1186/BF03546849.
When occurring together with the polysaccharide III-antigen the X-antigen displayed a phenotypic variation in vitro, and so did 1 R-strain. Genuine X-straims, and other types as well, seemed to remain unaffected by commonly used laboratory procedures. The hypothesis is advanced that previously described in-vivo variations of these antigens are induced by antibodies against the antigen in question.
当X抗原与多糖III抗原同时出现时,其在体外表现出表型变异,1型R菌株也是如此。真正的X菌株以及其他类型的菌株似乎不受常用实验室操作的影响。有人提出假说,认为先前描述的这些抗原在体内的变异是由针对相关抗原的抗体诱导产生的。