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Detection of a b12 epitope expressed by HIV-1 vaccine candidates. Staining of HEK293 cells with IgG1b12 post-transfection/infection with HIV vaccine candidates: (A) post-transfection with clade A Env expressing DNA vaccine; (B) lipofectin control; (C) post-infection with rFPV; (D) post-infection with wild-type FPV; (E) post-infection with rMVA; (F) post-infection with wild-type MVA. Magnification ×200.
