Brown pigment granules representing lipid-containing residues of lysosomal digestion and considered one of the aging or “wear and tear” pigments; found in liver, kidney, heart muscle, adrenal, and ganglion cells.
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li·po·fus·cin .lip-ə-'fəs-ən, .līp-ō-, -'fyü-sən n a brownish lipochrome found esp. in tissue (as of the heart) of the aged
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n.
a brownish pigment staining with certain fat stains. It is most common in the cells of heart muscle, nerves, and liver and is normally contained within the lysosome.
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lipo·fus·cin (lip″o-fuґsin) 1. a yellow to brown, granular, iron-negative lipid pigment found particularly in muscle, heart, liver, and nerve cells undergoing slow, regressive change and accumulating in lysosomes with age, being the product of oxidation and polymerization of the membrane lipids of autophagocytosed organelles. 2. lipochrome.Medical dictionary. 2011.