AUTHOR=Nazzi Francesco TITLE=Commentary: Engineered symbionts activate honey bee immunity and limit pathogens JOURNAL=Frontiers in Ecology and Evolution VOLUME=8 YEAR=2020 URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2020.538520 DOI=10.3389/fevo.2020.538520 ISSN=2296-701X