Urocortin 3 (Ucn3) is a neuropeptide that was discovered by our group (Lewis et al., 2001). Ucn3 is specifically expressed in mouse beta cells, but is in human islets also expressed by alpha cells (Li et al., 2003; van der Meulen et al., 2012). Ucn3 is a member of the same neuropeptide family as corticotropin-releasing […]