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  • Title: Studies on fine structure and location of lipids in quick-freeze replicas of atherosclerotic aorta of WHHL rabbits.
    Author: Amanuma K, Kanaseki T, Ikeuchi Y, Ohkuma S, Takano T.
    Journal: Virchows Arch A Pathol Anat Histopathol; 1986; 410(3):231-8. PubMed ID: 3099465.
    Abstract:
    The fine structure of intracellular and extracellular lipids in the atherosclerotic aorta of Watanabe-heritable hyperlipidemic (WHHL) rabbits was demonstrated by a quick-freeze etching technique. Many lipid droplets, with and without a membrane, were observed in the foam cells. Membrane-free droplets were observed as onion-like structure with a concentric lamellar structure surrounded by 10 nm filaments. Droplets surrounded by a limited membrane probably correspond to lipid-laden lysosomes. In the extracellular connective tissue space, marked accumulation of lipids with a vesicular structure was seen among collagen fibers. The appearance of these lipids was similar to that of lipids in lysosomes of foam cells.
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