AUTHOR=Zhang Xiaoning , Ma Rujun TITLE=Editorial: Roles of the first and second messengers in reproduction JOURNAL=Frontiers in Endocrinology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2024.1494529 DOI=10.3389/fendo.2024.1494529 ISSN=1664-2392