Kahlich R, Procházka O, Kartusek S
J Hyg Epidemiol Microbiol Immunol. 1975;19(2):207-16.
A comparative study of a series of 31 epidemic streptococci and 36 collection M protein producers showed no statistically significant difference in their resistance in human blood. Even highly resistant field strains did not produce M protein (as the main bactericidal activity receptor) under laboratory conditions, however, although under natural conditions they left an anti-M response in the exposed population. Streptococcal resistance is not generally associated with M protein, but is influenced by another factor.
对31株流行性链球菌和36株收集的M蛋白产生菌进行的比较研究表明，它们在人血液中的耐药性没有统计学上的显著差异。然而，即使是高耐药的野外菌株，在实验室条件下也不产生M蛋白（作为主要的杀菌活性受体），尽管在自然条件下它们在接触人群中引发了抗M反应。链球菌的耐药性通常与M蛋白无关，而是受另一个因素影响。
