MPMV gag-pro-pol and env specific sequences were detected in DNA of culture
s by PCR/hybridization. These ceti cultures were obtained by cocultivation
of B-cell lymphoma patients' lymphocytes which were positive on gag-pro-pol
sequences MPMV with Raji-cells. In addition, these cell cultures were posi
tive in tests for reverse transcriptase and inclusion of 14C-uridine. Cells
of these cultures were positive in expression of p14 protein of MPMV in We
stern blotting assay.