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Immunofluorescence imaging shows presence of elastin deposits (left panel; white arrows) but little fibrillin-1 (right panel) in the neointima (NI) of AAAs (shown mid-region of a 21 day AAA). Differently, strong fluorescence due to elastin and fibrillin-1 was associated with lamellae in the medial layer (M). Both elastic fiber components appear magenta and DAPI-stained nuclei appear blue. Magnification: 40×. The adventitial layer is labeled as ‘A’. Scale bars are 50 μm.
