The internal reticular apparatus of Camillo Golgi: a complex, heterogeneous organelle, enriched in acid, neutral, and alkaline phosphatases, and involved in glycosylation, secretion, membrane flow, lysosome formation, and intracellular digestion.

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Abstract
Its topography is one of the most characteristic features of the Golgi apparatus and the reticular nature of this organelle is evident in Golgi's first drawings, in light microscopic enzyme cytochemical preparations, and in high voltage electron micrographs of thick sections. Although individual components of the Golgi apparatus may differ in staining characteristics, morphology, contents, and enzymatic activities, they are integrated into a dynamic topographical and functional unit that is closely associated with the endoplasmic reticulum. Modulation of enzymatic activities and morphological and enzymatic heterogeneity are not surprising in an organelle that is the site of both synthetic and digestive events, including glycosylation, sulfation, formation of secretory granules and lysosomes, and the degradation of endocytized material.