Source:http://linkedlifedata.com/resource/umls/id/C0013355
MSH: A class of opioid peptides including dynorphin A, dynorphin B, and smaller fragments of these peptides. Dynorphins prefer kappa-opioid receptors (RECEPTORS, OPIOID, KAPPA) and have been shown to play a role as central nervous system transmitters.,CSP: class of endogenous opioid peptides; prefer kappa-opioid receptors and have been shown to play a role as central nervous system transmitters.