Hematopoiesis is the process by which the body produces blood cells. This occurs primarily in the bone marrow, where stem cells differentiate into various types of blood cells, including red blood cells, white blood cells, and platelets. Each type of blood cell has a specific function, such as transporting oxygen, fighting infections, or aiding in blood clotting. The process of hematopoiesis is regulated by various growth factors and hormones, ensuring that the body maintains a balanced supply of blood cells. Disorders in hematopoiesis can lead to conditions like anemia or leukemia, which affect overall health and immune function.