Figure 3From: Determination of HER2 phosphorylation at tyrosine 1221/1222 improves prediction of poor survival for breast cancer patients with hormone receptor-positive tumorsKaplan–Meier curves showing disease-free survival in relation to protein expression levels. (a) pHER1: negative (0), positive (1). (b) pHER2: negative (0), weak (1), strong (2). (c) pHER3: negative (0), positive (1). (d) HER4: moderate (1), strong (2).Back to article page