Hematopoiesis begins at around day 7 after fertilization in mice. What is the site of precursor cells at this stage of fetal development?

Hematopoiesis begins at around day 7 after fertilization in mice. What is the site of precursor cells at this stage of fetal development?

Hematopoiesis begins at around day 7 after fertilization in mice. What is the site of precursor cells at this stage of fetal development?










A. Bone marrow
B. Fetal liver
C. Placenta
D. Primitive organ
E. Yolk sac











Answer: E