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Normal ultrastructure of hepatocytes in the standard (STD) (a) and STD+exercise (EXC) (b) groups; degenerated nucleus (n), many small (arrow) and large (asterix) lipid droplets in the high-fat diet (HFD) group (c); quite regular hepatocyte ultrastructure with nucleus and decrease of small lipid droplets (arrow) in the HFD+EXC group (d) are seen.
