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Agarose gel electrophoresis of 22 field samples collected from Hainan Island in plantations, kitchen gardens, and feral patches by multiplex RT-PCR. Various lanes show papaya plant infected with PRSV and PLDMV (Lanes 2, 6, 8, 9, 12, 13, 14, 18, and 22); PRSV (Lanes 10, 11, 15, 16, 17, 19, and 20); PLDMV (Lanes 1, 4, 5, 7, and 21); PapMV (Lane 3); Lane ck+: positive control, PRSV + PLDMV + PapMV. Lane ck-: health plants as a negative control. Lane M: DL2000 DNA Marker.
