🩸 Chapter 495 · Development of the Hematopoietic System
Special Focus: Fetal Erythropoiesis — Nelson Textbook of Pediatrics 22nd Ed. Hematopoiesis in human embryo/fetus: mesoblastic → hepatic → myeloid. Fetal RBC indices, EPO regulation, globin switching (HbF → HbA), clinical relevance in anemias of prematurity, thalassemias, and hemoglobinopathies.