The physiological process by which blood cells are formed and developed in the bone marrow and other blood-forming organs.
From Greek 'haima' (blood) + 'poiesis' (making, production). This modern medical term became standard in the 20th century as hematology advanced and needed precise terminology.
Your bone marrow produces approximately 200 billion red blood cells every single day through hematopoiesis—if it stops working, your body quickly runs into serious trouble!
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