AUTHOR=Singla Rajeev K. , GuimarĂ£es Adriana Gibara , Zengin Gokhan TITLE=Editorial: Application of plant secondary metabolites to pain neuromodulation, volume II JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.1013063 DOI=10.3389/fphar.2022.1013063 ISSN=1663-9812