Fecal material from cattle, which was confirmed to be infected with Johne's disease by clinical and pathological symptoms, was decontaminated with 4% NaOH and inoculated into the Lowenstein-Jensen media supplemented with 1% of heat-killed Mycobacterium bovis. After 2-4 week-incubation at 37 deg C, typical acid-fast mycobacteria was isolated. The requirements of mycobactin for growth and the other biochemical properties, isolated mycobacteria was identified as Mycobacterium paratuberculosis

An ultrastructural study was to investigate on 2 cases of canine leiomyosarcoma. The nuclei of most tumor cells showed bilobate appearance. Most cells of the tumors had no distinct basement membrane. Most cells of the tumors had a degenerative rough endoplasmic reticulum. Intercellular matrix contained some amounts of collagen. Attachment areas between tumor cells were not apparent, but a few tight junction were clearly seen. Myofibrils were present in bipolar end area

This study was to investigate the development pattern of epididymis in accordance with the growth of meat-type cockerels. Histological features of various ductules in epididymis of the cockerel on the age of weeks were within 10 weeks after hatching rete testis and connecting ductules were well developed but efferent ductules were observed in immature form. During 10th to 20th week, the lining epithelium of various ductules in epididymis was in the developing stage near to the mature form

This study was undertaken to investigate congenital microphthalmia that occurred at a pig farm in Kyongbuk Korea [R.]. These microphthalmic piglets composed of 20 piglets farrowed by 3 different sows (1, 11 and 8 piglets by No. 1,2 and 3 sow, respectively) that were apparently normal during pregnancy and after parturition. Attempts were made to know epidemiological findings and histopathological changes of these piglets

The hemoglobin phenotype and the gene frequencies of 44 Formosan deer (Cervus nippon) in Kyunggido Korea [R.] area were examined by using cellulose acetate and starch gel electrophoresis. The method of cellulose acetate electrophoresis was simpler, more clear and preserative than starch gel electrophoresis. The hemoglobin phenotype had 3 types as (HbF) (HbFS and HbS). The frequencies of appearence were HbF 47.7% HbFS 47.7% and HbS 4.5%, respectively. The genetic factors of hemoglobin were observed as HbF and HbS and the rates of gene frequencies were 71.6% and 28.4% respectively

Authors observed an outbreak of porcine pleuropneumonia at a piggery in Kyongbuk, Korea R. which were diagnosed on the ground of clinical and pathological findings. Main clinical findings observed from 60 alive pigs from group consisted of fever, cyanosis severe degree of dyspnea and pleuritic friction rub. Hematological observation for typical 5 cases leukocytes showed marked degenerative left shift with leukopenia (10500-13070/cmm), neutropenia (7-13% and increase in the number of band neutrophils (6-27%)