granule cell

granule cell

n.

One of the small neurons of the cortex of the cerebellum and cerebrum.

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granule

1. a small particle or grain.

2. a small pill made of sucrose.

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acidophil g's

granules staining with acid dyes.

aleuronoid g's

colorless myeloid colloidal bodies found in the base of pigment cells.

alpha g's

1. oval granules found in blood platelets; they are lysosomes containing acid phosphatase.

2. large granules in the alpha cells of the islets of Langerhans; they secrete glucagon.

3. acidophilic granules in the alpha cells of the adenohypophysis.

amphophil g's

granules that stain with both acid and basic dyes.

azur g's, azurophil g's

granules that stain easily with azure dyes; they are coarse, reddish granules and are seen in many lymphocytes.

basophil g's

granules staining with basic dyes.

beta g's

1. granules in the beta cells of the islets of Langerhans that secrete insulin.

2. basophilic granules in the beta cells of the adenohypophysis.

granule cell

the largest group of cells produced by the external germinal layer on the external surface of the embryonal cerebellum; they form the thick granular layer of the cerebellum; called also granule neurons.

chromatic g's, chromophilic g's

see nissl bodies.

cone g's

the nuclei of the visual cells in the outer nuclear layer of the retina which are connected with the cones.

eosinophil g's

those staining with eosin. See also alpha granules (above).

epsilon granule

see neutrophil granules (below).

Grawitz's g's

minute granules seen in the erythrocytes in the basophilia of lead poisoning.

iodophil g's

granules staining brown with iodine, seen in polymorphonuclear leukocytes in various acute infectious diseases.

keratohyalin granule

keratin precursor; in the stratum granulosum of the epithelium.

metachromatic g's

granules present in mast cells and many bacterial cells, having an avidity for basic dyes and causing irregular staining of the cell.

mitochondrial g's

organelles in osteoblasts through which temporary calcium ion sequestration can be effected.

granule neurons

see granule cell (above).

neutrophil g's

neutrophilic granules from the protoplasm of polymorphonuclear leukocytes; called also epsilon granules.

Nissl's g's

see nissl bodies.

oxyphil g's

acidophil granules.

pigment g's

small masses of coloring matter in pigment cells.

primary g's

the peroxidase-positive granules of neutrophils, most prominent in the progranulocyte and early myelocyte stages.

rod g's

the nuclei of the visual cells in the outer nuclear layer of the retina which are connected with the rods.

secondary g's

the peroxidase-negative ('specific') granules seen in mature neutrophils.

seminal g's

the small granular bodies in the semen.

sulfur g's

see sulfur granule.

toxic g's

dark-staining granules in neutrophils that contain peroxidase and acid hydrolases. They occur in inflammatory reactions.