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Gag processing in HIVNL4-3 carrying a mutated protease with or without inserts. COS-7 cells producing four molecular clones (left pair, HIVNL/B-Pr and HIVNL/B-Pr/TGNS-APP; right pair, HIVNL/ES-Pr and HIVNL/ES-Pr/AQQA-PTAPPA) were harvested at 48 h after transfection, and their cell lysates were subjected to Western blot analysis with anti-p24 antiserum.
