dense bodies


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dense bodies

granules in the central granulomere of blood platelets that take up and store serotonin from plasma. Electron-dense bodies containing α-actinin in the cytoplasm of smooth muscle cells associated with the cell membrane are believed to be homologous to the Z-lines of striated muscle.

dense granule

Cardiology
A specialised spherical storage and secretory vesicle in platelets which contains ADP, ATP, ionised calcium, pyrophosphate and serotonin. Reduced-platelet dense-granule secretion is associated with marked protection against arterial thrombosis, inflammation, and neointimal hyperplasia after vascular injury in a mouse model.

Pathology
Dense-core granules, see there.

dense bod·ies

(dens bŏd'ēz)
1. Granules in the central granulomere of blood platelets that take up and store serotonin from plasma.
2. Electron-dense bodies containing α-actinin in the cytoplasm of smooth muscle cells, believed to be homologous to the Z-lines of striated muscle.

dense bodies

round, amorphous bodies scattered through the cytoplasm of smooth muscle fibers; they appear to be points of attachment for myofilaments.
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The cytoplasm in some sections became electron-lucent, devoid of ribosome and contained dense bodies and membrane whorls.
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sets of membranes, one inside the other, dense bodies, soft, thin, rigid.
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bundles of intracytoplasmic microfilaments with dense bodies that run parallel to the long axis of the cell (stress fibers)
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Two major intracellular granules are present, the [alpha] granules and dense bodies (Fig.
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