Table 2 A. CD34+ cell subsets in whole blood of preterm infants for the first 3 weeks of life.

Whole blood	Day	N	Median	Q1	Q3	Min	Max
CD34+	1	25	4969.00	3004.04	7040.49	745.00	26782.61
	7	17	2105.00	1179.00	3160.00	549.00	8102.00
	14	13	3653.00	1987.09	5019.34	59.00	7849.00
	21	10	2621.50	1634.00	3991.00	1134.14	5008.64
P			0.0001*
CD34+CD45−	1	24	49.78	23.76	151.00	6.12	272.00
	7	12	32.72	25.77	94.65	12.42	187.00
	14	11	35.50	16.60	175.00	13.20	315.00
	21	8	78.30	38.16	163.83	23.70	200.00
P			0.2268
CD34+VEGFR2+	1	24	51.35	19.45	87.86	0.00	165.00
	7	12	52.74	37.87	138.34	6.31	222.26
	14	9	45.53	36.97	61.87	8.33	161.57
	21	8	105.36	67.10	193.30	33.67	280.00
P			0.0002*
CD34+CD45−VEGFR2+ (EPC)	1	24	0.00	0.00	3.47	0.00	33.70
	7	12	2.53	1.48	11.70	0.00	22.10
	14	11	0.00	0.00	4.00	0.00	24.10
	21	8	5.52	2.15	14.75	0.00	24.70
P			0.379

Data presented as events per million leukocytes gated.

^*p<0.05