AUTHOR=Salem Abdelhakim , Salo Tuula TITLE=Commentary: Pathophysiological Role of Histamine H4 Receptor in Cancer: Therapeutic Implications JOURNAL=Frontiers in Pharmacology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2020.00874 DOI=10.3389/fphar.2020.00874 ISSN=1663-9812