Table 2.

Expression of blood group antigen carrying proteins as assessed by flow cytometry

Protein	Mean fluorescence		Erythrocyte percentage of reticulocyte	P
	Reticulocyte (n)	Erythrocyte (n)
Duffy	3425 ± 688 (8)	2269 ± 360 (8)	66	< .001
GPA	16 960 ± 2550 (9)	12 696 ± 1459 (9)	74	< .001
Kell	4324 ± 476 (6)	2860 ± 532 (6)	66	< .001
CD47	3225 ± 261 (6)	1861 ± 165 (6)	58	< .001
Band3	1834 ± 470 (8)	2101 ± 315 (8)	115	.2
GPC	1929 ± 158 (8)	2188 ± 188 (8)	113	.01

GPA indicates glycophorin A; and GPC, glycophorin C.