Hematopoiesis in the liver and marrow of human fetuses at 5 to 16 weeks postconception: quantitative assessment of macrophage and neutrophil populations.
Slayton WB, Juul SE, Calhoun DA, Li Y, Braylan RC, Christensen RD. Hematopoiesis in the liver and marrow of human fetuses at 5 to 16 weeks postconception: quantitative assessment of macrophage and neutrophil populations. Pediatr Res. 1998 Jun; 43(6):774-82.