Bone Blood vessels

Artists illustration of blood vessels. (Konstantin Inozemtsev/Alamy)

New type of blood vessel discovered in bone Researchers have discovered a network of tiny blood vessels criss-crossing our long bones, connecting the surface to the interior. The capillaries help to explain why doctors can inject drugs directly into a patient’s leg bone to get them quickly to other parts of the body. The capillaries might also solve how the immune cells made in the bone marrow make their way out. “It’s totally crazy there are still things to find out about human anatomy,” said immunologist Matthias Gunzer. New Scientist | 3 min read