Analysis of circulating TF and TFPI activities. Plasma samples were analyzed for circulating TFPI (A) and TF (B) activity levels. BalbC mice had significantly reduced circulating TFPI activities compared to the C57 (n=10) or 129S mice (n=10, A, * P<0.001). C57 mice (n=10) had significantly lower circulating TF activities compared to the 129S strain (n=10, B, † P<0.05 when compared to 129S mice). No significant differences in TF activity was observed in BalbC mice (n=10) compared to the other two strains. The TFPI to TF ratios were also plotted (C), and BalbC mice had significantly lower ratios than the C57 or 129S strains (C, * P<0.001). Data are presented as means ± SEM.