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Transmission electron micrographs of human peritoneal vascular endothelium immunostained for caveolin-1 and vimentin. Vesicular localization of caveolin-1 (10 nm immunogold) (arrows) and cytoplasmic localization of vimentin (20 nm immunogold) (A). Focus of caveolin-1-immunopositive vesicles (B). Bars = 500 nm.
