PR excludes host cell chromatin. (A) Following transfection with a plasmid expressing H4-DsR, BmN cells were infected with a recombinant virus expressing P91-GFP and analyzed by confocal microscopy at the indicated time points. (B) BmN cells were infected with a recombinant virus expressing P91-GFP, fixed at the indicated time points, stained with a DNA-specific dye (PI), and analyzed by confocal microscopy. Bars, 10 μm.