Soils are hemostatic in mouse wounds, dependent on FXII. (A) Blood loss with or without applying materials to transected tails of WT and FXII^−/− mice without ASA. Total blood loss in WT (B) and FXII^−/− (C) mice receiving ASA. n = 6-7. *P < .05; **P < .01. Error bars represent standard error of the mean (SEM). ns, no significant difference.