Table 3. Binding of coagulation factors to thrombin-activated platelets: theoretical results^a.

Ligand	Two other factors	Number of binding sites/platelet (n)	Kd (app) (nM)
fIXa	Absentb	250	2.57
	Presentc	250	0.69
fVIIIa	Absentb	750	1.5
	Presentc	926 (750 and 193)d	1.1 (1.5 and 0.34)d
fX	Absentb	16000	320
	Presentc	16002 and 755d	320 and 28.7d

^a The conditions of calculations are given in the legend to Figure 5.

^b Fixed values.

^c Obtained values.

^d Fitting to the two-site binding model.