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Figure 3 Atherosclerotic plaque area characterized by infiltration of leukocytes, most of them revealing brown staining for ubiquitin (arrow in main panel) and being identified as T cells by CD-3 immunostaining (A). Double immunofluorescence confirms co-localization of ubiquitin with T cells (round cells with yellow fluorescence for ubiquitin in the center, surrounded by red fluorescence for CD-3, B). Original magnification for all panels 100x.