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A, Human thoracic aortic aneurysms (TAAs) had significantly increased amounts of interleukin-1β (IL-1β) protein compared with normal thoracic aorta (TA) by ELISA. B, Correspondingly, TAAs had increased staining for IL-1β compared with normal TAs. IL-1β antibody is shown in brown. Scale bar, 200 μm.
