Mast cells. Most histamine in the body is generated in granules in mast cells and in white blood cells called basophils and eosinophils. Mast cells are especially numerous at sites of potential injury â the nose, mouth, and feet, internal body surfaces, and blood vessels.
urban adjective. âº of or in a âcity or âtown: Many âAmericans were âleaving the âfarm for the âpromise of urban âlife. Over 82% of Texans âlive in urban âareas. (Definition of urban from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
Computing (2010) In urban areas especially, we can be surrounded by noise and activity but speak to no one. The Sun (2016) The threat was as equal in urban areas as rural ones, where creatures thrive in woods and long grass. The Sun (2016) Or it can be used to compare different areas, such as the difference in fire statistics between urban and rural areas.