title: De novo biosynthesis of enkephalins and their homologues in the human placenta.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004723:Endorphins / Q000096:biosynthesis*; D004743:Enkephalin, Leucine / Q000031:analogs & derivatives; D004744:Enkephalin, Methionine; D004745:Enkephalins / Q000096:biosynthesis*; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D010446:Peptide Fragments / Q000032:analysis; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011863:Radioimmunoassay; D014443:Tyrosine / Q000378:metabolism
chemical_list: D004723:Endorphins; D004745:Enkephalins; D010446:Peptide Fragments; D014443:Tyrosine; D004744:Enkephalin, Methionine; D004743:Enkephalin, Leucine; C026768:enkephalin-Leu, Arg(6)-; C029363:enkephalin-Leu, Arg(6,7)-