The diseases of the genital The diseases of the genital organs of domestic animals diseasesofgenita01will Year: 1921 The Nodular Venereal Disease 303 muco-pus is formed in many severe cases. These attrition lesions are also responsible for frequent hemorrhages. The biology of the nodular venereal disease has not been satisfactorily determined. Ostertag discovered, in the muco-pus of the vulvae of cows, a streptococcus which he believed to be the essential cause of the disease. He intro- duced the organism, which he had grown experimentally. Fic. 90—A knob-like elevation of the mucosa due
The diseases of the genital The diseases of the genital organs of domestic animals diseasesofgenita01will Year: 1921 The Nodular Venereal Disease 303 muco-pus is formed in many severe cases. These attrition lesions are also responsible for frequent hemorrhages. The biology of the nodular venereal disease has not been satisfactorily determined. Ostertag discovered, in the muco-pus of the vulvae of cows, a streptococcus which he believed to be the essential cause of the disease. He intro- duced the organism, which he had grown experimentally. Fic. 90—A knob-like elevation of the mucosa due to several contiguous nodules. (Thorns.) into the vulvae of supposedly sound heifers, and believed that he produced the disease. It is a notable fact that in Ostertag's experiments, while he believed he had trans- mitted the disease to cows and heifers by means of pure cultures, he failed to transmit it to sheep, goats, and swine, although they regularly suffer from it. It is not clear, however, just what he accomplished. Doubt is thrown upon
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