RT Journal Article SR Electronic T1 Quantitation of intraepithelial lymphocytes in human jejunum JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 988 OP 994 DO 10.1136/gut.12.12.988 VO 12 IS 12 A1 Anne Ferguson A1 D. Murray YR 1971 UL http://gut.bmj.com/content/12/12/988.abstract AB An estimate of the number of intraepithelial lymphocytes in jejunal villous epithelium can be obtained by differential counting of nuclei in the epithelium. From counts carried out in 160 jejunal biopsies from patients who did not have coeliac disease the normal range has been established as 6-40 intraepithelial lymphocytes per 100 villous epithelial cells. In some biopsies there was a moderate increase in the intraepithelial lymphocyte count; this was probably an objective measurement of `increased chronic inflammatory cell infiltrate'. Intraepithelial lymphocyte counts were high in untreated coeliac disease; counts were lower, but rarely within the normal range, in coeliac patients on a gluten-free diet. Counts were normal in most autoimmune diseases, ulcerative colitis, and Crohn's disease. There were abnormal intraepithelial lymphocyte counts in four patients, with otherwise normal jejunal histology, in whom no cause had been found to explain prolonged and incapacitating gastrointestinal symptoms.