Abstract
Summary
The ability of 4 animal viruses (NDV, NWS, vaccinia and psittacosis) to propagate in Maitland-type tissue cultures of chick embryo and adult chick fibroblastic tissues and Rous sarcoma tissue was studied and all 4 viruses were found capable of proliferation in the embryo tissue, while only NDV and vaccinia virus multiplied in the adult chick and Rous sarcoma tissue cultures. Thus, Rous sarcoma tissue appears to be more closely related to connective tissue of adult chicks than to that of chick embryos in its susceptibility to infection with certain other viruses. NDV and Rous sarcoma virus can produce a dual infection of cells.
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