Effects of probucol on reverse cholesterol transport (RCT) in mice. Mice (n=8 in each group) were fed the experimental diets for 2 weeks, and RCT studies were performed as described in Methods on C57BL6/SW129 (A through C) and scavenger receptor class B type I knockout (SR-BI KO; D through F) mice. A and D, 3H-cholesterol in plasma after macrophage injection. B and E, 3H-cholesterol in liver. C and F, 3H-cholesterol in feces. cpm Indicates counts per minute. Significant difference, *P<0.05 (vs control).