APC gene mutations in ulcerative colitis-associated dysplasias and cancers versus sporadic colon neoplasms: L Tarmin, J Yin, N Harpaz, M Kozam, J Noordzij, H-Y Jiang, JM Abraham, K Cymes, O Chan, LB Antonio, SJ Meltzer. GI Division, Dept. of Medicine, Univ. of MD and VA Hospital, Baltimore, MD; and Dept. of Pathology, the Mt. Sinai Medical Center, NY, NY