Blood cells and fat: Bone marrow is a mixture of developing and mature blood cells and fat. The precursors of white blood cells, red blood cells and platelets start in the bone marrow and mature into their final forms before entering the circulatory system.
Answered 2/13/2013
5.7k views
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question