Question

what is bone marrow?????????????

Answer 1

Bone Marrow is soft, spongy tissue found inside some of the body's bones, such as legs, arms and hips. Bone Marrow is the body's 'stem cell factory’. Stem cells are vital cells which go on to create the body’s blood cells; platelets, red blood cells and white blood cells, the primary agents of the body's immune system.  

Answer 2

Answer:

Bone marrow is the spongy tissue inside some of the bones in the body, including the hip and thigh bones. Bone marrow contains immature cells, called stem cells.