Nagi, BAggarwal, VThapar, B C1991-04-012009-05-291991-04-012009-05-291991-04-01Nagi B, Aggarwal V, Thapar BC. A reliable fluoroscopic sign of activation of per oral jejunal Crosby biopsy capsule. Indian Journal of Gastroenterology. 1991 Apr; 10(2): 69http://imsear.searo.who.int/handle/123456789/64081engBiopsy --instrumentationFluoroscopyHumansJejunal Diseases --pathologyJejunum --pathologyA reliable fluoroscopic sign of activation of per oral jejunal Crosby biopsy capsule.Letter