(A) Representative images and (B) quantitative analyses of immunohistochemistry (IHC) for stromal markers on tumor sections from KC and KCM mice at 50 weeks of age (n=4/ group). Expression of α-SMA, FN1, and HA was significantly reduced, accompanied by a nonsignificant increase in expression of FAP in KCM tumors, as compared to KC tumors. (C) Quantitative PCR analysis on RNA isolated from KC/ KCM tumors (n=4/ group) and (D) CAFs (isolated from 50 weeks KC and KCM tumors, n=4/ group) demonstrate heterogeneity in stromal markers. t-test *p<0.05.