Wells, F E Use of the biochemical estimation of acetylcholinesterase in rectal biopsies. [electronic resource] - Journal of pediatric gastroenterology and nutrition - 628 p. digital Publication Type: Letter ISSN: 0277-2116 Subjects--Topical Terms: Acetylcholinesterase--analysisBiopsyHirschsprung Disease--pathologyHumansInfant, NewbornRectum--pathology