Oncotarget (IMAGE) Impact Journals LLC Caption Improved Efficacy of Pembrolizumab When Combined With sEphB4-HSA in HPV-negative EphrinB2-positive HNSCC Credit 2024 Jackovich 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.