using a silver impregnation technique we have made a detailed histologic study of the rectum and large bowel in a number of cases with provisional clinical diagnosis of hirschsprung 's disease but in which rectal biopsy showed small ganglia in meissner 's plexus demonstrated by acetylcholinesterase ( ach-e ) staining .
C0034896
rectum
C0193050
rectal biopsy