Serotypic heterogeneity in isolates of human genital T-mycoplasmas

Serological typing of human genital T-mycoplasmas by a complement-dependent mycoplasmacidal test showed that some recent isolates had different serotypic behavior before and after purification, and that the widely distributed prototype strain T960 was composed of at least two different serotypes. These results indicate that T-mycoplasma isolates from human genital tracts are not serologically homogeneous.