Medically reviewed by Gagandeep Brar, MDBone marrow is the deep, interior portion of your bone. Your bone marrow, which has a ...

M ultiple myeloma is a rare blood cancer of the plasma cells in bone marrow -- the soft, spongy interior of bone where all ...

This is a stained cross section of spongy bone from a human fetus. The spongy bone is blue (1). You can also see the connective tissue between the bones in light blue and gold (2). The outer layers of ...