Figure 2From: The association between retraction of the torn rotator cuff and increasing expression of hypoxia inducible factor 1α and vascular endothelial growth factor expression: an immunohistological study group II (Patte I) (a) has low vessel density. Group IV (Patte III) shows many visible vessels (b) (Rotator cuff slices, 10× magnification, Masson-Goldner staining).Back to article page