The author discussed several researches made Olll the so-called bovine influenza, thathad raged throughout the greater part of Japan, from 1949 to [952. As the result of thatdiscussion, two species of filtrable viruses were reported, aetiologically, at least. The firstvirus was isolated in Kyushu and concured with Miyagawanella. The other was isolatedin Honshu. These two species of viruses differ from the others. The first remarks wereof encephalitis non-purulenta and the intracellular elementary bodies, pathologically.The author studies pathologically, 37 naturally affected cases that had been collectedin the prefectures of Tottori, Hyogo, Gifu, Aichi, and Fukui. As the result of the studies, he recognized that the cases NVCIC of other disease, different from Miyagawanellosis, andthe Ephemeral fever occurring in Australia.The so-called pharyngo-laryngeal paralysis was observed as the remarkable symptomof this disease. The broncho-pneumonia catarraalis et gangraenosa was observed in thelurzgs, pathologic-anatomically. It XV21S recognized to be foreign bodies pneumonia bypharyngo-laryngeal paralysis as there were foreign bodies in the lesions. In somecases, rejceated ruminantial puncture affected peritonitis purulenta et gangraenosa, thechanges centred in the punctured wound, and there was neutrophilic wandering in allbodies. The regressive changes in the parenchymatous tissue were, necrotic foci in theliver, necrobiosis in the follicle of the spleen, and uratic tubules in the kidnies and, also, reaction of the reticulo-endothel and. lymphatic system in liver, spleen, Nymph gland, kidniesand other organs XV8S observed. These lesions were considered as the reaction from infectionby the viruses. But there was observed 110 elementary bodies, the remarks of Miyagawa-nellosis, anywhere. Fig. 1. (case 11) Callosity-formation in myocardium. X 100Fig. 2. (case 31) Perivascular infiltration of Iymphocytes, histiocytes and leucocytes in myocardiurrn.x 100Fig. 3. (case 6) Broncho-pneumonia. Bronchiolus contains neutrophiles, desquamative epithelial cellsandforeignbodies. XIOFig. 4. (case 28) Necrotic foci with cell infiltration in liveracini. X 100Fig. 5. (case 3) Small necrotic foci with karyorrhexis, R.E.S. reaction and neutrophilic infiltrationin liver-acini. XIOOFig. 6. (case 11) Intertubular gathering of round-cells and necrobiosis of uratic tubules in kidney. X 50
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