Definitions for "Mast cells"
Mast cells are uniquely rich in chemical mediators that when released, either as a result of an allergic reaction or for any reason, can cause edema, itching, bronchospasm, and inflammation. They line the mucous membranes of the bronchial tubes, respiratory mucosa of eyes, nose, sinus, and intestinal tract. The skin is also rich in mast cells. The mast cells have special receptors for IgE and play central role in allergic reactions and asthma.
Type of tissue cells which have a high histamine content and which participate in allergic reactions in the process called mast cell degranulation.
Typically found in connective tissue, mast cells can be provoked by antigens or inflammation to release histamine.