Mast cell
Immune cell found in connective tissue
Mast cell
A mast cell (also known as a mastocyte or a labrocyte) is a resident cell that develops and lives in connective or mucosal tissue and contains many small secretory granules for the storage and release of histamine, heparin and other mediators. Derived from myeloid progenitor cells, mast cells are granulocytes, a type of white blood cell, and part of the immune and neuroimmune systems. Mast cells were described by Friedrich von Recklinghausen in 1863 and rediscovered and named by Paul Ehrlich in 1877. Mast cells act as sentinels, detecting signals that indicate the presence of parasites, pathogens and other possible dangers in surrounding cells and tissues. MCs modulate immune responses according to the stimuli detected, both by releasing mediators stored in granules and by secreting newly synthesized mediators. They play an important protective role in the defense and repair of cells through wound healing, angiogenesis, vascular permeability, and responses to bacteria, viruses, protozoa...
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