The incidence of lymphoid foci in the large intestine.
D000368:Aged; D005260:Female; D005490:Focal Infection / Q000453:epidemiology*; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D007420:Intestine, Large / Q000473:pathology*; D008221:Lymphoid Tissue / Q000473:pathology; D012002:Rectal Diseases / Q000276:immunology; D012007:Rectum / Q000473:pathology