title: Distribution of opioid peptides in brain and GI tract: age- and species-specific differences.
authors.affiliation: Rockefeller University, New York, NY.
authors.forename: E M
authors.initials: EM
authors.lastname: Unterwald
authors.forename: F
authors.initials: F
authors.lastname: Nyberg
authors.forename: L
authors.initials: L
authors.lastname: Terenius
authors.forename: M J
authors.initials: MJ
authors.lastname: Kreek
mesh_terms: D000375:Aging / Q000378:metabolism; D000818:Animals; D001923:Brain Chemistry / Q000187:drug effects; D004064:Digestive System / Q000378:metabolism*; D004723:Endorphins / Q000378:metabolism*; D004744:Enkephalin, Methionine / Q000031:analogs & derivatives / Q000494:pharmacology; D006168:Guinea Pigs; D007031:Hypothalamus / Q000187:drug effects / Q000378:metabolism; D066298:In Vitro Techniques; D008297:Male; D051381:Rats; D013045:Species Specificity
chemical_list: D004723:Endorphins; D004744:Enkephalin, Methionine; C033460:enkephalin-Met, Arg(6)-PheNH2(7)-