*[[Erythropoiesis#Regulation|'''Erythropoietin''']] - A hormone synthesised in the kidney that acts on stem cells of the [[Bone Marrow - Anatomy & Physiology|bone marrow]] to stimulate [[Erythrocytes|erythrocyte]] (red blood cell) production. | *[[Erythropoiesis#Regulation|'''Erythropoietin''']] - A hormone synthesised in the kidney that acts on stem cells of the [[Bone Marrow - Anatomy & Physiology|bone marrow]] to stimulate [[Erythrocytes|erythrocyte]] (red blood cell) production. |