RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • Assessment of Replication and Virulence of Attenuated Pseudorabies Virus in Swine

        T. J. Newby,D. P. Carter,K.-J. Yoon,M. W. Jackwood,P. A. Hawkins 대한수의학회 2002 Journal of Veterinary Science Vol.3 No.2

        A nonclinical study was conducted to characterizethe replication behavior of a modified live gE-deletedpseudorabies virus (PRV MS+1) in swine and potentialfor reversion to virulence after animal passages.Twoto 3 week-old weaned pigs, negative for PRV, weremaintained in isolation and challenged by intranasalinstillation.For the first passage,6 pigs were given 1mL of PRV MS+1 (107.3 TCID50/mL) an d 2 w erenecropsied at 3, 4 and 5 days post-inoculation (PI).Brain and secondary lymphoid tissues were collected,homogenized and the supernatants individually pooledfor virus isolation,and PRV was recovered from eachsample. No clinical signs of PRV in fection w ereobserved, but each pig had a nasal swab suspect orpositive for PRV.For the second passage,5 pigs weregiven 1 mL of the homogenate of mixed tissues from1 animal in the previous passage (PRV at 101.9TCID50/mL). At 5 days PI, all pigs were necropsied,and PRV w as n ot recovered from their tissu ehomogenates or nasal swabs, and no clinical signswere observed. During a second attempt at a secondpassage,tissue homogenates from all pigs in the firstpassage (PRV at approximately 101.7 TCID50/mL) werepooled and used to inoculate 15 pigs with 2 mL for 3consecutive days.Ten pigs were monitored for clinicalsigns and seroconversion through 21 days PI, and 5pigs were necropsied at 5 days PI.No clinical signs orPRV antibodies were detected in the 10 monitoredpigs,and no PRV was recovered from the homogenatesor nasal swabs of the 5 necropsied pigs. Thus, noevidence of reversion to virulence was demonstratedin pigs given the attenuated PRV.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼