analysis of saturation binding data in the presence of cacl2 and thrombin without factors viii and x indicated the presence of 306 ( +/- 57 ) binding sites per platelet for factor ix ( kd ( app ) = 2.68 +/- 0.25 nm ) and 515 ( +/- 39 ) sites per platelet for factor ixa ( kd = 2.57 +/- 0.14 nm ) .
C0015491
factor ix
C0015494
factor ixa