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Transfer of JSRV infection from infected CP cells. U3 PCR for exogenous JSRV DNA was carried out on 500 ng of genomic DNA. The parental infected and uninfected CP cells before cocultivation are shown in lanes 1 and 2, respectively. In lane 3 are shown CP cells 8 weeks after cocultivation. +, JSRV21 plasmid DNA; −, distilled water. M, 100-bp ladder (Gibco).
