Figure 1 (IMAGE) Impact Journals LLC Caption Figure 1: Representative images of PD-L1 (A), CD8 (B) and mucin (C) and staining. Credit Baretti et al. Usage Restrictions Original Content License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.