Medullary and extramedullary blood formation.
D000818:Animals; D001853:Bone Marrow / Q000098:blood supply / Q000502:physiology*; D004920:Erythropoiesis / Q000502:physiology; D006410:Hematopoiesis / Q000502:physiology*; D006801:Humans; D007962:Leukocytes / Q000502:physiology; D008099:Liver / Q000502:physiology; D008533:Megakaryocytes / Q000502:physiology; D051379:Mice; D013154:Spleen / Q000502:physiology