Figure 3From: 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 Rotator cuff slices after straining with HIF antibody (40× magnification). Minimal HIF expression is detected in group I (control group) (a). Many HIF positive cells in group IV (Patte III) (b).Back to article page