title: Age-related changes in regulatory peptides in rectal mucosa.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005768:Gastrointestinal Hormones / Q000032:analysis; D006801:Humans; D007413:Intestinal Mucosa / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009479:Neuropeptides / Q000032:analysis*; D019894:Peptide YY; D010455:Peptides / Q000032:analysis; D011863:Radioimmunoassay; D012007:Rectum / Q000032:analysis*; D013004:Somatostatin / Q000032:analysis; D014660:Vasoactive Intestinal Peptide / Q000032:analysis
chemical_list: D005768:Gastrointestinal Hormones; D009479:Neuropeptides; D010455:Peptides; D019894:Peptide YY; D014660:Vasoactive Intestinal Peptide; D013004:Somatostatin