Figure 1. Circulating levels of HE4 (human epididymis protein 4) were associated with the degree of cardiac fibrosis in patients with dilated cardiomyopathy.

A, Representative microscopic images of cardiac tissue biopsy stained with hematoxylin and eosin (H&E) and Masson trichrome staining (MTS). B, The collagen area fraction in the high and low HE4 groups was compared using Mann‐Whitney U test. C, The correlation between ratio of collagen area fraction/serum HE4. Bar=100 μm.