Lysosomes

Telophagolysosome (residual body) in a human cell from the submandibular gland, with heteromorphic content. Lipofuscin granules, which are seen in some cell types (see Fig. 66), represent tertiary (permanent) lysosomes ( residual lysosomes, telolysosomes). In contrast, the rod or disk-shaped granules in neutrophil granulocytes (see Fig.351) and the discus-shaped granules with crystalloid content in eosinophil granulocytes (see Fig. 143) are primary lysosomes.

1 Secretory granules

2 Granular ER (rER) membranes

Electron microscopy; magnification: x 30 000

Lysosomes Electron

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