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What is Blood is produced in first six months in fetus in? and explain in detail?
Ans. is 'a' i.e., LiverErythropoiesis sitesIntrauterine0-10 weeks - Yolk sac10 weeks - 5 months - Liver (major organ) and spleen5 month onward - Bone marrowAfter bihUpto 20 years - Bone marrow of all bones After 20 years - Flat bones of axial skeletal and proximal end of humerus and femur.