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Immunohistological analysis of paraffin-embedded CP and control pericardium. Pericardium tissues in CP were shown increased α-Smooth muscle actin (α-SMA) and collagen type III (col-III) compared to tissues in normal, suggesting that fibrosis changes occurred in CP pericardial specimens. Representative photographs were shown. Bar =200 µm. CP, constrictive pericarditis.
