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Medical Term:

mast cell


a connective tissue cell that contains coarse, basophilic, metachromatic secretory granules that contain, among other pharmacologic agents, heparin, histamine, and eosinophilic chemotactic factor. These cells are involved in immediate hypersensitivity reactions and play a role in the regulation of the composition of ground substance.

Synonym(s): granule cell of connective tissue, labrocyte, mastocyte, tissue basophil

[G. Mastszellen, well-fed c. (Ehrlich)]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.