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gran·u·lar en·do·plas·mic re·tic·u·lum
endoplasmic reticulum in which ribosomes are located on the cytoplasmic surface of the cisternae; involved in the synthesis of protein destined to be transported via membrane-bound vesicles to the extracellular space.
ergastoplasm/er·gas·to·plasm/ (er-gas´to-plazm) granular endoplasmic reticulum.
Etymology: Gk, ergaster, worker, plassein, to mold
a network of cytoplasmic structures that show basophilic staining properties; granular endoplasmic reticulum. See also endoplasmic reticulum.
gran·u·lar en·do·plas·mic re·tic·u·lum(gran'yū-lăr en'dō-plaz'mik rĕ-tik'yū-lŭm)
Endoplasmic reticulum in which ribosomal granules are applied to the cytoplasmic surface of the cisternae; involved in the synthesis and secretion of protein through membrane-bound vesicles to the extracellular space.