[Morphologic changes in the kidneys of calves with respiratory mycoplasmosis]

The kidneys of 144 naturally diseased calves and those of 47 experimentally infected with Mycoplasma bovirhinis calves were investigated by histological and immunomorphological methods. The kidneys of calves with respiratory mycoplasmosis were often found to be involved in the pathological process, and at the initial stage of the disease and at its height prolifirative, membranous-prolifirative glomerulonephritis, and at later stages proliferative-fibroplastic glomerulonephritis developed. The secondary glanular kidney is a most often outcome of glomerulonephritis. The authors hold that lesions of glomerules were caused by immunopathological mechanisms.