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Background:Atrial fibrosis was considered a structural basis for the development and sustaining of atrial fibrillation (AF). Transforming growth factor‐β1 (TGF‐β1) was one of the main factors for accelerating collagen production. The contribution of TGF‐β1 in the pathogenesis of AF needs further investigation.
Hypothesis:The altered expression and distribution of TGF‐β1 will be associated with the...