A–B, RNA was isolated by LCM of lesional cells in 12 wk WD-fed Ldlr−/− and Csf2−/−Ldlr−/− mice, and mRNA of the indicated genes was quantified by RT-qPCR. All data are normalized to Actb mRNA. n=5 mice per group; *, p<0.05; n.s., no significant difference. C, Atherosclerotic lesional extracts obtained from 12 wk WD-fed Ldlr−/− and Csf2−/−Ldlr−/− mice were assayed for IL-23 by ELISA. n=10 mice per group; *, p<0.05; n.s., no significant difference.