Description : Haematopoiesis take place in – (1) Lungs (2) Pancreas (3) Liver (4) Bone marrow
Last Answer : (4) Bone marrow Explanation: Haematopoiesisis the formation of blood cellular components. The sites where haematopoiesis occurs change during embryonic development, but in adult mammals, the bone ... hematopoietic stem cell niche, com-posed of osteoblasts, mesenchymal cells and sinusoidal vessels.