Where Does Erythropoiesis Occur In The Fetus?

Where Does Erythropoiesis Occur In The Fetus? The formation of red blood cells in blood-forming tissue. In the early development of a fetus, erythropoiesis takes place in the yolk sac, spleen, and liver. After birth, all erythropoiesis occurs in the bone marrow. What is the site of erythropoiesis in the first trimester? Primitive erythropoiesis begins