Table VI.

Percent of cells in each activation state as determined from visual examination using SEM (n = 3 per material and protein preadsorption).

Protein pretreatment	Material		% Round	% Dendritic	% Spread dendritic	% Spreading	% Fully spread
0.03 mg/ml pure Fg	PBMA	Average	0.85	21.55	47.26	30.33	a
		Std error	0.44	2.16	9.19	7.46
	PVDF-HFP	Average	2.90	22.14	46.95	28.02	a
		Std error	2.90	5.62	6.99	5.31
	SIBS1	Average	0.00	22.71	56.41	20.87	a
		Std error	0.00	4.14	0.43	4.57
	SIBS2	Average	0.41	27.03	48.02	24.55	a
		Std error	0.41	2.64	0.76	1.47
1% plasma	PBMA	Average	0.00	37.44	38.83	20.80	2.94
		Std error	0.00	7.43	4.05	3.01	1.57
	PVDF-HFP	Average	2.38	37.55	34.25	16.12	9.71
		Std error	2.38	13.74	8.61	1.83	4.58
	SIBS1	Average	1.33	21.79	11.52	11.03	54.32
		Std error	1.33	7.35	3.80	2.02	9.28
	SIBS2	Average	4.76	19.05	19.05	23.81	33.33
		Std error	1.59	22.11	12.51	21.95	41.85
No protein preadsorption	PBMA	Average	0.00	39.08	22.69	20.56	17.67
		Std error	0.00	2.38	6.33	2.76	5.28
	PVDF-HFP	Average	0.00	17.82	5.75	6.32	a
		Std error	0.00	17.82	5.75	6.32
	SIBS1	Average	0.00	30.02	22.32	23.29	24.37
		Std error	0.00	2.48	1.20	3.81	3.29
	SIBS2	Average	b	b	b	b	b
		Std error	b	b	b	b	b

^aDense surface coverage, making it difficult to count individual cells.

^bImages that were too poor in quality to determine individual platelet activation state.