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Cytology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Microscopically, mast cells are ovoid in shape and have a small, spherical nucleus that is virtually swamped by surrounding cytoplasmic granules. The granules stain stongly with basic dyes.

Ultrastructural study reveals little by means of synthetic machinery in the cytoplasm e.g. a paucity of mitochondria. The granules are semi-crystalline and membrane-limited. They contain an array of active substances which are released on degranulation.

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