Table 1. Hematopoietic progenitors... | American Society of Hematology

Table 1.

Hematopoietic progenitors circulating in fetal blood

Median Gestational Age (Range)	No. of Progenitors × 10³/mL
Median Gestational Age (Range)	CFU-GEMM	CFU-GM	BFU-e	Total
10⁺⁰ wks (7⁺⁶-13⁺¹)	10.5 ± 1.3	3.3 ± 0.4	5.4 ± 0.8	19.2 ± 2.1
15⁺⁰ wks (14⁺⁵-20⁺⁰)	32.5 ± 15.7^*	31.4 ± 12.0^†	19.7 ± 12.6^*	83.6 ± 31.3^†
39⁺⁰ wks (38⁺⁰-40⁺⁰)	5.6 ± 0.7	9.7 ± 5.7	11.1 ± 2.1^*	26.4 ± 5.6

Median Gestational Age (Range)	No. of Progenitors × 10³/mL
Median Gestational Age (Range)	CFU-GEMM	CFU-GM	BFU-e	Total
10⁺⁰ wks (7⁺⁶-13⁺¹)	10.5 ± 1.3	3.3 ± 0.4	5.4 ± 0.8	19.2 ± 2.1
15⁺⁰ wks (14⁺⁵-20⁺⁰)	32.5 ± 15.7^*	31.4 ± 12.0^†	19.7 ± 12.6^*	83.6 ± 31.3^†
39⁺⁰ wks (38⁺⁰-40⁺⁰)	5.6 ± 0.7	9.7 ± 5.7	11.1 ± 2.1^*	26.4 ± 5.6

Figures given in mean ± SEM.

Indicates that P < .01, comparing mean ± SEM with first trimester;

indicates P < .0001, comparing mean ± SEM with first trimester.