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  • Title: Comparative pathogenesis studies with oncogenic and nononcogenic Marek's disease viruses and turkey herpesvirus.
    Author: Calnek BW, Carlisle JC, Fabricant J, Murthy KK, Schat KA.
    Journal: Am J Vet Res; 1979 Apr; 40(4):541-8. PubMed ID: 229747.
    Abstract:
    An apparently nononcogenic Marek's disease virus (SB-1) and turkey herpesvirus could be readily isolated from spleen, bursa of Fabricius, thymus, and peripheral blood lymphocytes of chickens beginning 4 to 6 days after inoculation, but unlike infections with two isolates of oncogenic Marek's disease virus (JM-10 and CU-2), virus replication in these cells was rare, and necrosis in the organs was essentially absent. Splenic enlargement was observed regularly during the first 4 to 11 days after inoculation, and Marek's disease tumor-associated surface antigen was observed on splenic and other lymphocytes in the four viral inoculation groups. Cellular cytotoxicity of splenic lymphocytes was demonstrated in vitro with cultured Marek's disease tumor cells (MSB-1 lymphoblastoid cell line) as the target in a chromium-release assay. The four viral infections induced sensitized lymphocytes.
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