title: Substance P and enkephalins in spinal cord after limb amputation.
mesh_terms: D000368:Aged; D000671:Amputation, Surgical; D004723:Endorphins / Q000032:analysis*; D004745:Enkephalins / Q000032:analysis*; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D013116:Spinal Cord / Q000378:metabolism*; D013373:Substance P / Q000032:analysis*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D013373:Substance P