National Institute of Animal Health quarterly最新文献

Properties of hog cholera viruses recently isolated in Japan. 最近在日本分离的猪瘟病毒的特性。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

M Shimizu, Y Shimizu

引用次数: 0

Five new species of the genus Culicoides (Diptera: Ceratopogonidae) from West Malaysia. 文章标题西马来西亚库蠓属五新种(双翅目:蠓科)。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

S Kitaoka

引用次数: 0

Experimental egg transmission of chicken anemia agent. 鸡贫血剂的实验鸡蛋传播。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

N Yuasa, I Yoshida

引用次数: 0

Propagation and infectivity titration of the Gifu-1 strain of chicken anemia agent in a cell line (MDCC-MSB1) derived from Marek's disease lymphoma. 鸡贫血因子Gifu-1株在马立克病淋巴瘤细胞系(MDCC-MSB1)中的繁殖和感染性测定

National Institute of Animal Health quarterly Pub Date : 1983-01-01

N Yuasa

引用次数: 0

Detection of gametocytes in chickens recovered from natural infection with Leucocytozoon caulleryi. 鸡自然感染卡勒氏白细胞虫后配子体的检测。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

T Kitani, T Isobe, K Akiba, Y Nakashima, S Ebisawa

引用次数: 0

Improvement of complement fixation test antigen for the diagnosis of Mycoplasma hyopneumoniae infection. 补体固定试验抗原诊断肺炎支原体感染的改进。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

Y Mori, Y Yoshida, C Kuniyasu, K Hashimoto

引用次数: 0

Experimental studies on vertical infection of mice with Japanese encephalitis virus. IV. Effect of virus strain on placental and fetal infection. 乙型脑炎病毒垂直感染小鼠的实验研究。病毒株对胎盘和胎儿感染的影响。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

Y Fujisaki, Y Miura, T Sugimori, Y Murakami, K Miura

{"title":"Experimental studies on vertical infection of mice with Japanese encephalitis virus. IV. Effect of virus strain on placental and fetal infection.","authors":"Y Fujisaki, Y Miura, T Sugimori, Y Murakami, K Miura","doi":"","DOIUrl":"","url":null,"abstract":"An experiment was carried out to examine the effect of an inoculated strain of Japanese encephalitis virus on the establishment of experimental vertical infection of mice with this virus. In it, closed-colony mice of the CFW strain were inoculated intravenously with seven strains of the virus at 7 days of pregnancy. After that, an attempt was made to recover the virus from placenta and fetus, so that the infection rate of each strain might be determined. As a result, the infection rate was high for both placenta and fetus in the case of the AS-6 and Sagara strains both of which had undergone three passages in the mouse brain. The placental infection rate was high and the fetal infection rate relatively low in the case of the JaGAr01 and Fuji strains which had undergone 7 and 150 passages, respectively, in the mouse brain. The infection rate was very low for both placenta and fetus in the case of the Nakayama-Yakken strain which had undergone more than 100 passages in the mouse brain. There was no difference in the severity of viremia after inoculation between the AS-6 and Fuji strains. Both placental and fetal infection rates were low in the case of the JaTH160 strain which had undergone passages in mice by intraperitoneal inoculation and which presented a strong peripheral infectivity and induced a severe viremia after inoculation. Neither placental nor fetal infection occurred in the case of the S- strain used as live virus vaccine. These results indicated that placental and fetal infection rates varied from one virus strain to another.(ABSTRACT TRUNCATED AT 250 WORDS)","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"23 1","pages":"21-6"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17164275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution of chicken anemia agent (CAA) and detection of neutralizing antibody in chicks experimentally inoculated with CAA. 鸡贫血剂(CAA)在雏鸡体内的分布及中和抗体的检测。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

N Yuasa, T Taniguchi, T Imada, H Hihara

引用次数: 0

Partial purification and characterization of gizzard erosion-inducing substance in heated casein-histidine mixture. 酪蛋白-组氨酸加热混合物中砂囊侵蚀诱导物质的部分纯化与表征。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

S Miyazaki, Y Umemura

{"title":"Partial purification and characterization of gizzard erosion-inducing substance in heated casein-histidine mixture.","authors":"S Miyazaki, Y Umemura","doi":"","DOIUrl":"","url":null,"abstract":"A heated casein-histidine mixture, or the model compound of gizzard erosion-inducing fish meal, was prepared, and a gizzard erosion-inducing substance in this mixture was partially purified. The mixture was refluxed with hydrochloric acid, and the supernatant was obtained. The supernatant was then adjusted to the pH of the isoelectric point of casein and the resulting precipitate collected. The precipitate was further hydrolyzed with papain at a neutral pH. After acidification of the reaction mixture, the supernatant and the precipitate were separated. The supernatant fraction, which was toxic to induce gizzard erosion, was submitted to a gel filtration of Sephadex G-25, and resolved into five fractions. Gizzard erosion-inducing toxicity was found only in the second fraction. The non-toxic second fraction was also prepared by the same treatment from the non-toxic material of heated casein. The characters of these toxic and non-toxic second fractions were compared by using several analytical methods. Thin layer chromatography, as well as gel permeation chromatography, revealed that more than eight components having widely distributed molecular weights existed in both second fractions. By reversed phase chromatography, these fractions were found to consist of various peptides (or peptide-like compounds). Some characterizations, however, were performed. It failed to detect any difference in the components between the toxic and non-toxic second fractions by any analytical method used.","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"23 1","pages":"32-8"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17735655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrastructural observation on the bacterial capsule of Bacillus anthracis seen in the spleen of a diseased cow. 病牛脾脏炭疽芽孢杆菌菌囊的超微结构观察。

National Institute of Animal Health quarterly Pub Date : 1983-01-01

M Kubo, M Osada, S Kuri

引用次数: 0