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張明雄,朴鼎圭,尹志炳,崔大卿 충남대학교 의과대학 지역사회의학연구소 1979 충남의대잡지 Vol.6 No.2
Several kinds of Ginseng extracts tested acted as neither stimulants nor inhibitants to the growth of Mycobacterium tuberculosis H37Rv in Dubos complete broth (with albumin) and in Dubos basal broth (without albumin.) The bacterial growth in Dubos basal broth was not influenced by 100㎍ per ml of methanol extract, while it was inhibited slightly by 100㎍ per ml of ethanol extracts, but showed severe inhibition by 100 ㎍ per ml of ether extract and by 500 ㎍ per ml of ethanol and methanol extracts, No effect was demonstrated with a Ginseng extract from a commercial source. The results suggest that Ginseng extracts by ethanol, methanol or ether contain some thing to inhibit the growth of M. tuberculosis and that the principle be neutralized with albumin Dubos complete broth.
Zearalenone ELISA kits의 응용에 관한 연구
윤화중,김태종,이승윤,제갈준,윤지병,Yoon, Hwa-joong,Kim, Tae-Jong,Lee, Sung-Yun,JeGal, Jun,Yoon, Ji-Byung 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.2
For the extraction and measurement of zearalenone in the corn, bean, wheat and barley contaminated with Fusarium graminearum, the zearalenone-oxime, zearalenone-oxime BSA and zearalenone monoclonal antibodies were studied to develop and apply the direct competitive enzyme linked immunosorbent assay (ELISA). The extraction range of zearalenone with the monoclonal antibodies produced in this experiment was 10ng to 500ng/g feed and the 50% inhibition value was 50ng/ml. The mean recoveries of zearalenone artificially spiked in the ground corn were 89%. The specificity of F-2 monoclonal antibody for the analogues was favorable for the direct competitive ELISA. The result of the experiment showed the zearalenone in the corn, bean, wheat and barely naturally contaminated with the mold would be suitable for extraction and measurement with the monoclonal antibodies.
소 백혈병 Provirus DNA의 PCR법에 의한 증폭 및 ECL법에 의한 검출에 관한 연구
김우호,라창식,안수환,윤지병 대한바이러스학회 1992 Journal of Bacteriology and Virology Vol.22 No.1
For the development of DNA diagnostics of animal infections, we adopted the amplification and detection of bovine leukosis proviral DNA by polymerase chain reaction(PCR) and enhanced chemiluminescence(ECL) technique performances as a model system. The PCR technique is an in vitro method in which genomic or cloned target sequences are specifically and enzymatically amplified as directed by a pair of oligonucleotide primers. So, the PCR technique is an excellent rnethod to address the issues of sensitivity and specificity in the characterization of nucleic acids. The fact that the PCR technique allows the specific amplification of discrete fragments of DNA makes it much easier to detect nucleic acid fragments that are initially present in the sample in picogram quantities. The ECL gene detection systern is also a novel sensitive, non-radioactive system for the detection of nucleic acid hybridized on both nylon or nitrocellulose membranes. It is characterized by direct labelling of probe sequences with horseradish peroxidase(HRP) combined an ECL detection reaction: the light output is captured on bluelight sensitive film. Bovine leukosis virus(BLV) is considerably distributed in cattle herds. It infects B lymphocytes and causes neoplastic disease with various levels of infected animals. Direct economic losses are incurred as a result of death, reduced milk production and condemnation at slaughter. Thus, the iden- tification of cattle infected with BLV is of significant concern to the cattle industry. For this reason, PCR amplification and ECL gene detection systems were applied to examine cattle for the presence of BLV proviral DNA in peripheral blood mononuclear cells(PBMC). BLV sequences were detected in 15(10.2%) of 147 dairy cattle examined (30 Korean cattle were all negative) by PCR-ECL system. Syncytium assay by in vitro cocultivation rnethod has showed 12 of 15 PCR-positive samples. These findings indicate that PCR-ECL is a sensitive method for the detection of BLV in cattle. Thus, in principle, these methods are easily applicable not only to the DNA diagnosis of BLV, but also to the DNA diagnosis of other microorganisms including various viruses.
돼지 Rotavirus의 역가 , 중화항체가 측정 및 Virus분리 방법 개량에 관한 연구
권혁진,윤석민,하용공,조성수,윤지병 대한바이러스학회 1991 Journal of Bacteriology and Virology Vol.21 No.2
New methods for porcine rotavirus titration, serum neutralization, and virus isolation from fecal samples were developed using swine testicle cell line (STL) grown in the maintenance medium containing pancreatin. The improved method was easy to perform and end points of the rusults were clear. The practical period of time was shortened 4 to 6 days using improved method for porcine rotavirus titration, serum neutralization test, and virus isolation from fecal samples. It was found that there were only minor differences in porcine rotavirus titers and serum neutralization antibody titers tested by conventional and improved methods. Fifteen porcine rotaviruses were isolated from 41 fecal samples of piglet suspected with rotavirus infection. The isolates showed specific cytopathic effect of rotavirus infection in STL cells and infectivity titers ranged from 10 -10 TCID 50/ml.
END법을 이용한 돼지콜레라바이러스 및 이에 대한 중화항체가 측정법 개량에 대한 시험
권혁진,윤석민,하용공,조성수,김교종,윤지병,Kwon Hyock-Jin,Yoon Seok-Min,Ha Rung-Kong,Cho Sung-Soo,Kim Kgo-Jong,Yoon Ji-Byung 대한수의사회 1991 대한수의사회지 Vol.27 No.12
The END method for titration of hog cholera virus and its serum neutralizing antibody was improved using ST cells grown and kept in modified media. ST cells were grown in Eagles media containing 0.5$\%$ lactalbumin hydrolysate, 10$\%$</TEX
박남용,정치영,김진호,조성만,차연호,정병탁,김동성,윤지병,박진열,위성하,Park Nam-Yong,Chong Chi-young,Kim Jin-ho,Cho Sung-man,Cha Yeon-ho,Jung Byung-tack,Kim Dong-sung,Yoon Ji-byung,Park Jin-yul,Wee Sung-ha 대한수의사회 1987 대한수의사회지 Vol.23 No.9
The pathological and microbiological studies were carried out to investigate an acute, febrile, highly fetal, infectious disease of rabbits that had occurred in the Winter and in the Spring and that had begun to be reported in Korea from November, 1985. The clinical signs of this disease were characterized by high fever, lethargy, piercing shriek, convulsion, and sudden death with epistaxis, but often they were not observed. The predominant pathogical findings were severe congestion and hamorrhage in trachea, dark brown discoloration of liver by diffuse necrosis or acute viral hepatitis, and hamorrhagic damages of lung, heart, spleen, kidney, etc. The etiological agent was a small round virus, in 25-35nm in diameter and without envelope, thus looking like a picorna virus. This disease resembled what was called the 'Viral Hamorrhagic Pneumonia in Rabbits'(tentative name) that had been reported for the first time in China in 1984. It will be desirable that the disease should be renamed as the 'Viral Hemorrhagic Fever in Rabbits', the 'Acute Viral Hepatitis in Rabbits', etc. because of its charateristics and the basis of pathological findings. An inactivated vaccine is now in the process of preparation for the prophylaxis of this viral disease.