AUTHOR= Frontiers Editorial Office TITLE=Retraction: Tumor Microenvironment in Oral Cancer Following Neoadjuvant Pembrolizumab: Preliminary Analysis of the Histopathologic Findings JOURNAL=Frontiers in Oral Health VOLUME=3 YEAR=2022 URL=https://www.frontiersin.org/journals/oral-health/articles/10.3389/froh.2022.893486 DOI=10.3389/froh.2022.893486 ISSN=2673-4842