Inoculation of rabbits with permanent B-cell line cultures obtained from Stumptailed Macaques M. arctoides (MAL) which contain lymphotropic herpesvirus and C-type particles has led to the development of generalized lymphomas. The lymphoma cells had rabbit karyotype and did not contain surface an cytoplasmic immunoglobulins. Permanent suspension of lymphoid cell line independent of growth factors was obtained from rabbit lymphoma. The serum of a rabbit with lymphoma transmitted from another rabbit with MAL-induced lymphoma did not react with virus-negative human Raji cells when tested in immunofluorescence. But this serum reacted positively with cytoplasmic antigens of simian 594S-F9 cells (producing lymphotropic herpesvirus and two types of retroviruses, namely, endogenous C-type and HTLV-I-like) and human C91-PL cells (producing HTLV-I). The results obtained demonstrated high oncogenicity of the viruses produced by simian permanent cellular MAL lines for rabbits.
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