[Biochemical and serological study of mycoplasma isolated from milk in cases of mastitis].

Studied were biochemically and serologically a total of 10 Mycoplasma cultures isolated from milk of mastitis-affected cows (clinical and subclinical forms). The organisms were differentiated as belonging to Mycoplasmataceae (M. alkalescens species), and Acholeplasmataceae (A.

Direct isolation of mycoplasmas and acholeplasmas from sera and kidneys of calves.

Kidneys and sera of calves from various farms and primary kidney tissue cultures were tested for mycoplasma and acholeplasma contamination. Altogether 24 strains belonging to Mycoplasma arginini and Acholeplasma axanthum were isolated from tissue cultures, kidneys and sera. The same species were detected from lungs and peribronchial lymph nodes of calves, together with A.

Studies on the pathogenicity of Acholeplasma axanthum in swine.

Acholeplasma axanthum sp. was isolated from the lung of swine with catarrhal pneumonia. Clinical symptoms of respiratory disease, gross and histological lesions of pneumonia, as well as serological response were produced by intranasal inoculation of ;miniature pigs' with the supernatant of lung suspension containing Acholeplasma axanthum and by a 48 hr.