| 1 | Bone marrow exists in two types, yellow and red. | |
| 2 | Erythrocyte formation (erythropoiesis) takes place in the red bone marrow in the adult, and in the liver, spleen and bone marrow of the fetus. | |
| 3 | Bone marrow that actively produces blood cells is called red marrow, and bone marrow that no longer produces blood cells is called yellow marrow. | |
| 4 | Results of animal experiments and clinical experiences indicated that bone grafts impregnated with autologous red marrow could promote osteogenesis. | |
| 5 | It produces red blood cells in the inner red marrow and stores fat in the yellow marrow. |