FIG. 3.
Northern blot analyses of endogenous MLV expression. Total mouse liver RNA was used. The locations of the gag, pro-pol, and env hybridization probes are shown in gray on the diagram below the blots. Hybridization with a 28S rRNA or β-actin probe was used to show equal loading of the lanes. Band sizes were estimated from a standard curve constructed from an RNA standard. Lanes: KO, RNA from female macroH2A1 knockout liver; N, RNA from normal female liver.