| GRN | granules; granulin |
|---|---|
| SEGNE | secretory granules of neural and endocrine [cells] |
| JG, jg | juxtaglomerular |
| JGA | juxtaglomerular apparatus |
| JGC | juxtaglomerular cell |
| JG | Juxtaglomerular |
|---|---|
| JGC | juxtaglomerular cell |
| MCG | Membrane-coating granules |
| NSG | Neurosecretory granules |
| ZG | Zymogen granules |
| juxtaglomerular granules | Osmophilic secretory granule's present in the juxtaglomerular cells, thought to contain renin. (05 Mar 2000) |
|---|
| juxtaglomerular | Close to or adjoining a renal glomerulus. (05 Mar 2000) |
|---|---|
| juxtaglomerular apparatus | A collective term for the juxtaglomerular cells in a nephron. These are specialised cells containing secretory granules, located in the tunica media of the afferent glomerular arterioles. They are receptors thought to stimulate secretion of the adrenal hormone aldosterone and to play a major role in renal autoregulation. (12 Dec 1998) |
| juxtaglomerular body | A collection of cells around the renal glomerular arterioles that contain cytoplasmic granules, probably composed of renin. Synonym: periarterial pad. (05 Mar 2000) |
| juxtaglomerular cells | Cell's, located at the vascular pole of the renal corpuscle that secrete renin and form a component of the juxtaglomerular complex; they are modified smooth muscle cell's primarily of the afferent arteriole of the renal glomerulus. Synonym: Goormaghtigh's cells. (05 Mar 2000) |
| juxtaglomerular complex | A complex consisting of the juxtaglomerular cells, which are modified smooth muscle cells in the wall of the afferent glomerular arteriole and sometimes also the efferent arteriole; extraglomerular mesangium lacis cells, which are located in the angle between the afferent and efferent glomerular arterioles; the macula densa of the distal convoluted tubule; and granular epithelial peripolar cells located at the angle of reflection of the parietal to the visceral capsule of the renal corpuscle; believed to provide some feedback control of extracellular fluid volume and glomerular filtration rate. Synonym: j-g complex, juxtaglomerular apparatus. (05 Mar 2000) |
| a granules | Large, rodlike, or filamentous granules found in several types of cells, especially platelets where they are the most numerous type of granule; contain secretory proteins, including fibrinogen, fibronectin, fibrospondin, von Willebrand factor (collectively known as adhesive proteins) and other proteins (platelet factor 4, platelet-derived growth factor, coagulation factor V, etc.). (05 Mar 2000) |
| argentaffin granules | Granule's that reduce silver ions from an ammoniacal silver nitrate staining solution. (05 Mar 2000) |
| Bensley's specific granules | Granule's in the cells of the islands of Langerhans in the pancreas. (05 Mar 2000) |
| Bollinger granules | Relatively small, but frequently microscopically visible, pale yellow or yellow-white granule's observed in the granulomatous lesion, or the exudate, in botryomycosis; the granule's consist of irregular aggregates or colonizations of Gram-positive cocci, usually staphylococci, term sometimes incorrectly used synonymously with Bollinger bodies. (05 Mar 2000) |
| volutin granules | A nucleoprotein complex found as cytoplasmic granules in certain bacteria, yeasts, and protozoa (such as trypanosome flagellates) which serves as food reserves. Synonym: volutin granules. (05 Mar 2000) |
| metachromatic granules | Granule's that stain a colour different from that of the dye used. See: metachromasia. Term sometimes used as a synonym for volutin. (05 Mar 2000) |
| chromaffin granules | Granules in the adrenal glands and various other organs, which are concerned with the synthesis, storage, metabolism, and secretion of epinephrine and norepinephrine. (12 Dec 1998) |
| chromophobe granules | Granule's that do not stain or stain poorly with the ordinary dyes; such granule's are present in some cells in the anterior lobe of the pituitary. (05 Mar 2000) |
| mucinogen granules | Granule's that produce mucin, as in cells of the salivary glands and in the gastric and intestinal mucosae. (05 Mar 2000) |
| Crooke's granules | Lumpy masses of basophilic material in the basophil cells of the anterior lobe of the pituitary, associated with Cushing's disease, or following the administration of ACTH. (05 Mar 2000) |
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