Expression and activity of TF on monocytes in the presence of PF4 and KKO. (A) Expression of TF on monocytes at different PF4 concentrations in the absence (○) or presence of KKO (♦). N ≥ 3, each in duplicate. Mean ± 1 SE are shown. *P < .05 for relative binding in the absence versus presence of KKO. (B) Same as in panel A but for TF activity. Gray bar represents the range of TF activity after LPS stimulation. N ≥ 3, each in duplicate. Mean ± 1 SE are shown. *P < .05 for relative binding in the absence versus presence of KKO.