Hematopoietic cells are specialized cells responsible for the formation of blood cells in the body. They originate from hematopoietic stem cells found in the bone marrow. These cells differentiate into various types of blood cells, including red blood cells, white blood cells, and platelets, which play crucial roles in oxygen transport, immune response, and blood clotting, respectively. The process of blood cell formation is known as hematopoiesis. It involves a series of stages where hematopoietic stem cells develop into progenitor cells, which then mature into fully functional blood cells. This continuous process is vital for maintaining healthy blood levels and overall bodily function.