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Biological activity of RcRE sequences from HTDV/HERV-K genomes. The HIV Gag precursor in cell lysates was determined with an HIV p24 capture assay after cotransfection of the indicated pHIVgagRcRE reporter vectors into HLtat cells with the effector plasmid pRec or p(−) (A), pRev (B), or pRex (C). Expression of pHIVgagRcRE pcK30 in the presence of pRec was set as 100%; all other data are relative to this value. Error bars indicate average deviations.
