Metachromatic granules | Article about metachromatic granules by The Free Dictionary
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metachromatic granules[¦med·ə·krō′mad·ik ′gran·yülz]
(cell and molecular biology)
Granules which assume a color different from that of the dye used to stain them.
References in periodicals archive
Six cases (5.6%) of mast cell tumor were identified through moderate to high cellularity with cytoplasm containing packed metachromatic granules
. These patterns of cytological observations were recorded by Kumar et al.
Giemsa stain highlighted metachromatic granules
. An immunohistochemical study of CD117 was also positive.
Microscopy of throat swab revealed rods containing metachromatic granules
on Albert stain.
Histopathologic analysis of the resected mass revealed sheets of round cells that contain metachromatic granules
, defined as neoplastic mast cells, within a fine fibrovascular stroma.
The blasts did not stain with myeloperoxidase but showed metachromatic granules
when stained with TB (Figure 1B).