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October 21, 1905


JAMA. 1905;XLV(17):1248-1249. doi:10.1001/jama.1905.52510170040002

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TUBERCULOSIS AND PSEUDOTUBERCULOSIS IN ANIMALS.  Certain differences between the bacilli of human and bovine tuberculosis were mentioned in the preceding chapter. In cattie the. disease shows a characteristic tendency to remain localized in one organ or group of organs over a long period. It is a nodular disease as in man, but differs from human tuberculosis in that the nodules often grow to large size, may be imbedded in and sharply differentiated from surrounding healthy tissue, and not infrequently involve serous surfaces, forming large masses of firm sessile or pedunculated tumors. The nodules frequently are fibrous from the beginning, undergo early and extensive calcification and rarely soften. We are not to understand, however, that miliary tuberculosis does not occur in cattle. Although the process in the lungs is usually of a fibrous and large nodular nature, rapid dissemination with formation of many miliary tubercles may cause the picture of acute

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