Table 4.

Surface proteins expressed on MPs used for intravenous injections

Surface Protein	Standard (n = 17)	Recompressed (n = 11)	PEG-Incubated (n = 6)
CD41	25.7 ± 0.4*	44.6 ± 2.5*	16.2 ± 0.9*
CD66b	5.5 ± 0.2	29.6 ± 0.8*	3.3 ± 0.6
CD31	24.3 ± 0.6*	56.1 ± 2.4*	12.9 ± 0.6*
von Willebrand factor	20.8 ± 0.5*	50.0 ± 1.8*	11.6 ± 0.4*
Glycophorin A	22.0 ± 0.3*	47.8 ± 1.7*	12.3 ± 0.3*
Tissue factor	2.1 ± 0.1*	28.3 ± 1.7*	0.6 ± 0.1*
CD14	9.8 ± 0.3*	30.7 ± 1.5*	5.8 ± 0.3*

Values are means ± SE, expressed as percentage of total; n, number of animals. MPs, microparticles.

^*P < 0.05 vs. the other 2 samples in the same row.