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HIV-1 p24 antigen levels in supernatants from nontransfected M4C8 cells and cells expressing the RNase P-associated U5 EGS Molecules and exposed to HIV-1 clades A, B, C, and F (moi = 0.01 and 0.05). □, M4C8; ▴, M4C8 + U5 EGS (560); ●, M4C8 + U5 EGS (560D).
