Figure 6From: Prolactin-induced protein mediates cell invasion and regulates integrin signaling in estrogen receptor-negative breast cancerSchematic diagram of the PIP signaling pathway in ER-negative breast cancer. Red arrow denotes stimulatory effect. ER, estrogen receptor; Fn, fibronectin; Fn-f, Fibronectin fragment; ITG-β1, integrin-β1.Back to article page