[Prolonged persistence of M. arthritidis and M. fermentans in the bodies of experimentally infected rats].

The dynamics of the distribution of M. arthritidis and M. fermentans antigens in the organism of Wistar rats infected with these mycoplasmas introduced in a single injection has been studied. The indirect immunofluorescent test has shown that both Mycoplasma species are localized mainly in the lymphoid tissue, the bone marrow and the articular cartilage and that M. fermentans persists longer in these tissues (up to 1 year). The aggregate hemagglutination test has revealed that the antigens of both Mycoplasma species can be detected in the blood of the infected rats for 6 months.