Plasma assays of platelet activation markers. (A) ADAMTS13 in L^–/–/A^–/– and L^–/–/A^–/–/FG^–/– mice. (B) sP-Sel in L^–/–/A^–/– and L^–/–/A^–/–/FG^–/– mice. (C) VWF-Ag in L^–/–/A^–/– and L^–/–/A^–/–/FG^–/– mice. (D) VWF-CBA in L^–/–/A^–/– and L^–/–/A^–/–/FG^–/– mice. N = the number of mice used at each time point. *P < .05; **P < .001; ^P < .01.