title: Letter: Azo coupling of indole-reactive enterochromaffin cells.
mesh_terms: D000818:Animals; D001391:Azo Compounds; D002838:Chromaffin System / Q000032:analysis / Q000166:cytology*; D003106:Colon / Q000166:cytology; D005069:Evaluation Studies as Topic; D005976:Glutaral; D006168:Guinea Pigs; D006651:Histocytochemistry; D006801:Humans; D007211:Indoles; D007413:Intestinal Mucosa / Q000166:cytology; D007420:Intestine, Large / Q000166:cytology; D007962:Leukocytes / Q000166:cytology; D008722:Methods; D051379:Mice; D009928:Organ Specificity; D011817:Rabbits; D012701:Serotonin / Q000032:analysis; D013045:Species Specificity; D013194:Staining and Labeling; D013270:Stomach / Q000166:cytology
chemical_list: D001391:Azo Compounds; D007211:Indoles; D012701:Serotonin; D005976:Glutaral