Effect of wild-type (WT), DN, and CA Rab4A-, Rab4B-, Rab5-, and Rab7-EGFP expression on RV cell infection. The percentages of cells expressing mutant Rab-GFP proteins that were VP6 positive compared to infection rates of nontransfected cells from the same well are shown. ***, P < 0.001; **, P < 0.01; *, P < 0.05 (one-way ANOVA test followed by the Newman Keuls multiple-comparison posttest).