PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8374808-10 1993 It is concluded from our studies that in general, catecholamine concentrations in various regions of the brain and spinal cord of sexually mature pigs parallel distributions of neuropeptides, substance P, and methionine enkephalin, as previously reported. Catecholamines 50-63 proenkephalin Sus scrofa 220-230