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Pathological study was made of 173 gallbladders among 652 slaughter pigs. The size and the pH of the bile juice were made of 50 among 173 gallbladders with lesions and 50 normal gallbladders as control. The results are summerized as follows : 1. The histological lesions were shown hyperemia and congestion(83.2%), Iymphocytic infiltration(37.5%), Iympoid hyperplasia(27%), epithelial downgrowth(27%), erosion and ulcer(22%), papillary hyperplasia (20.2%), pericholecystic edema(19.5%), hemorrhage(11%), and leukemic cell infiltration(0.6%). 2. In the gallbladders with lesions mean size was 4.26×7.88cm in diameter and mean pH is 7.2. In the control means size and mean pH were 4.57×8.13cm in diameter and 7.1. The difference of size between gallbladders with lesions and these as control was not statistically significant. The pH of bile juice between two showed also no statistically significant difference.
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