A comparative study on the virulence of Mycoplasma arthritidis and "Mycoplasma hominis, type 2" strains in rats.
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The present paper compares the fluorescence-serological detection of M. hyopneumoniae and M. hyorhinis in frozen sections with cultural procedures. In 161 lungs of swine the agent of enzootic pneumonia, M. hyopneumoniae, was found almost exclusively in frozen sections (22 times). Only one strain was cultivable. M. hyorhinis was detected 59 times by culture but only 18 times in the sections. For the detection of M. hyopneumoniae therefore the fluorescence-serological investigation of lung sections is the preferable method.
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The optimum parameters of the immunoenzyme assay system for the identification of antibodies to M. arthritidis and M. fermentans in the sera of patients with rheumatoid arthritis have been established. The investigation has shown that the products obtained by the ultrasonic disintegration of the biomass of M. arthritidis and M. fermentans can be used as soluble antigens for adsorption on the polystyrene surface of plates. The use of the immunonenzyme assay, specially modified, has made it possible to establish that antibodies to M. arthritidis can be detected in 6.5% of cases, antibodies to M. fermentans, in 41.9% of cases and the association of antibodies to M. arthritidis and M. fermentans, in 41.9% of cases. At the same time antibodies to M. arthritidis have been found to belong mainly to IgM and antibodies to M. fermentans, to IgG or to IgG and IgM simultaneously.
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