The most primitive stem cells (hemocytoblasts) give birth to two types of precursors: the lymphoid and myeloid stem cells. These, by dividing several times in turn, produce the white blood cells, the red blood cells and the platelets.
The most primitive stem cells (hemocytoblasts) give birth to two types of precursors: the lymphoid and myeloid stem cells. These, by dividing several times in turn, produce the white blood cells, the red blood cells and the platelets.