Haematopoiesis and Immune System Development
Haematopoiesis is the fusion and development of Blood Cells and occurs during embryonic growth and throughout adulthood to yield and replenish the blood system. Cellular blood components are resultant from hematopoietic stem cells that reside primarily in the bone marrow, a key site of adult haematopoiesis. The blood system comprehends more than 10 different blood cell types with numerous functions: Leukocytes represent many specialized cell types involved in innate and acquired immunity. Erythrocytes deliver O2 and CO2 transport, whereas megakaryocytes create platelets for blood clotting and wound healing.