Figure 1From: Is there a role for the quantification of RRM1 and ERCC1 expression in pancreatic ductal adenocarcinoma? Staining for RRM1 and ERCC1 proteins. (A) ERCC1-positive sample. Note the intense nuclear staining. (B) ERCC1-negative sample. (C) RRM1-positive sample. Note the intense cytoplasmic staining. (D) RRM1-negative sample.Back to article page