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Type I collagen gene expression. (A) Human ascending aorta from nonaneurysmal patients (n = 23), aneurysmal with tricuspid aortic valve (TAV) patients (n = 21), and aneurysmal with bicuspid aortic valve (BAV) patients (n = 40). Bars represent mean ± SEM. *Significant from nonaneurysmal for p less than 0.05.
