Robuta

https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2011.00014/full Frontiers | Defying the Stereotype: Non-Canonical Roles of the Peptide Hormones Guanylin and... The peptide hormones uroguanylin and guanylin have been traditionally thought to be mediators of fluid-ion homeostasis in the vertebrate intestine. They serv...