title: beta-Endorphin in male rat reproductive organs.
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D004723:Endorphins / Q000032:analysis*; D004822:Epididymis / Q000032:analysis; D005837:Genitalia, Male / Q000032:analysis*; D006801:Humans; D008297:Male; D011467:Prostate / Q000032:analysis; D051381:Rats; D012669:Seminal Vesicles / Q000032:analysis; D013737:Testis / Q000032:analysis; D014018:Tissue Distribution; D014649:Vas Deferens / Q000032:analysis
chemical_list: D004723:Endorphins