Bone marrow fills the cavities in your bones and produces blood cells. Red blood cells carry oxygen, white blood cells fight germs, and platelets help blood clot. Bone marrow disorders include ...

Researchers in Sweden have engineered a cell-free cartilage scaffold that can guide the body to rebuild damaged bone. By removing the cells but preserving the structure and natural growth signals, the ...

“It can hit you out of nowhere,” she tells TODAY.com.