A bone marrow biopsy is a medical procedure used to collect a small sample of bone marrow, which is the soft, spongy tissue inside your bones where blood cells are made. This test helps a physician ...

In multiple myeloma, abnormal plasma cells build up inside bone marrow -- the spongy tissue inside large bones where blood cells are produced. Over time, myeloma cells cause damage to bones, kidneys, ...

Medically reviewed by Gagandeep Brar, MD Key Takeaways Bone marrow fills the cavities in your bones and produces blood cells.Red blood cells carry oxygen, white blood cells fight germs, and platelets ...

Bone marrow is a spongy tissue found inside some of your bones. Your body uses it to make white blood cells, red blood cells, and platelets. Bone marrow is the soft tissue in your bones that makes and ...