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a membrane-bound vesicle, usually containing protein synthesized in the rough endoplasmic reticulum. The protein is delivered to the Golgi complex and is packaged in the trans-Golgi network as secretory granules.
granule(gran'ul?) [L. granulum, little grain]
1. A small, grainlike mass.
2. In histology, a small intracellular mass that has no apparent internal structure.
A granule that stains readily with acid dyes.
A cytoplasmic granule in many normal cells. It is not affected by ether or chloroform, but disappears from view when acetic acid is added.
amphophil granuleBeta granule.
A small red or reddish-purple granule that easily takes a stain with azure dyes. Found in lymphocytes and monocytes, it is inconstant in number, being present in about 30% of the cells.
basal granuleBasal body.
A cellular granule that stains with a basic dye.
An azurophil granule found in beta cells of the hypophysis or islets of Langerhans of the pancreas that stains with both acid and basic dyes. Synonym: amphophil granule
chromophil granulesNissl body.
The nuclei of the cones, sensory cells of the retina. They form the outer zone of the outer nuclear layer of the retina.
A small granule in the delta cells of the pancreas.
One of various granules that react with acid dyes. It is present in eosinophils.
One of the minute particles of glycogen seen in liver cells following fixation.
A granule found within the juxtaglomerular cells of the kidneys. Juxtaglomerular cells secrete renin.
Kölliker interstitial granule
A granule in the sarcoplasm of a striated muscle fiber.
An irregularly sized granule found in the protoplasm of numerous bacteria. It stains a different color from that of the dye used.
Much granulesSee: Much granules
Any of the cytoplasmic granules of a neutrophil that often stain a pale blue.
Nissl granulesNissl bodies.
A granule seen in pigment cells.
A basophilic granule seen in the conjugating form of Plasmodium vivax.
A minute protein particle found in cells.
A nucleus of a rod photoreceptor found in the retina.
Schüffner granulesSee: Schüffner, Wilhelm A. P.
secretory granuleZymogen granule.
One of the minute particles in semen, supposed to derive from disintegrated nuclei in nutritive cells from seminiferous tubules.
A granule present in gland cells, esp. the secretory cells of the pancreas, the chief cells of the gastric glands, and the serous cells of the salivary glands. It is the precursor of the enzyme secreted.Synonym: secretory granule