title: Two faces for an opioid peptide--and more receptors for pain research.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Simonin
authors.forename: Brigitte L
authors.initials: BL
authors.lastname: Kieffer
mesh_terms: D000818:Animals; D003001:Cloning, Molecular; D019204:GTP-Binding Proteins / Q000378:metabolism; D005727:Ganglia, Spinal / Q000166:cytology / Q000378:metabolism; D006801:Humans; D009475:Neurons, Afferent / Q000378:metabolism*; D009619:Nociceptors / Q000378:metabolism*; D018847:Opioid Peptides / Q000378:metabolism*; D010146:Pain / Q000378:metabolism; D051381:Rats; D011956:Receptors, Cell Surface / Q000235:genetics / Q000378:metabolism*
chemical_list: D018847:Opioid Peptides; D011956:Receptors, Cell Surface; D019204:GTP-Binding Proteins