Colorized transmission electron micrographs showing, A: internal elastic lamina of an aorta, characterized by large fenestrations traversed by an irregular meshwork of elastic strands, and, B: a similar view of the internal elastic lamina of the femoral artery shows small fenestrations.

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Keywords: aorta, art, arterial, artery, blood, cell, colorized, elastic, em, enhanced, fenestration, fenestrations, histology, history, illustration, lamina, micrograph, tem, vessel