Multiple endocrine neoplasia type 1 (MEN1) is a hereditary tumor syndrome characterized by tumors of the parathyroid glands, the pancreatic islets, the pituitary gland, the adrenal glands, as well as ...
Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...