pigment granule


Also found in: Dictionary, Thesaurus, Encyclopedia.

pigment granule

A granule seen in pigment cells.
See also: granule
References in periodicals archive ?
None of the PG eyes exhibited diffuse anterior iris stromal pigment granule dusting, except for trace cluster of pigment granules on inferior surface of the iris in three PG eyes from three patients.
Since myosin appears to be the predominant motor activated during slow-phase aggregation (McNamara and Ri-beiro, 1999), this suggests that PKG phosphorylates proteins involved in myosin-based translocation of pigment granules.
Sources of intracellular friction, pigment granule density, surface area, and viscoelastic properties may contribute to the general resistance of pigment matrix movement: thus, ([mu]) may be considered as an apparent viscosity.
Chromatic adaptation in the decapod Crustacea is brought about by the differential translocation of colored pigment granules contained within specialized, multicellular effectors known as chromatosomes (McNamara, 1981).
In material sectioned for light and electron microscopy, the processes containing the white pigment granules form a cap around the apex of each photocyte [ILLUSTRATION FOR FIGURE 6 OMITTED].
To identify the cytoskeletal mechanisms of RPE pigment migration, we investigated whether disruption of microtubules with nocadozole would block pigment granule movement in isolated sunfish RPE cells in vitro.
There exist numerous pigment granules, sparsely scattered small vesicles of various shapes, mitochondria, Golgi apparatuses, and myeloid bodies (Plate 5).
Likewise, eyes can darken if the number of pigment granules increase or make darker pigment for some reason.
Besides densely staining pigment granules, there are lucent granules containing irregular inclusions or even crystalline material.
Pigment aggregation is the cluster of individual pigment granules.
But if the feed zone is too hot, pigment granules melt too quickly and become encrusted on the screw.
The pigment granules did not stain with Prussian blue for iron.