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Nuclear localization of pX and TFIIB. (A and B) Indirect immunofluorescent staining of cells transiently transfected with pX expressor. Blue labels DNA in the nucleus; green labels actin filaments in the cytoplasm; red labels pX. (C) Double indirect immunofluorescent staining of transiently transfected cells. Red indicates TFIIB staining, and green indicates pX staining.
