intraindividual comparisons of tumorous and nontumorous tissue specimens in patients with adenocarcinomas of the colon and rectum revealed no marked differences in their glutathione content and enzyme activities except in the sigma , where we found significantly lower gsh concentrations and higher gsh s-aryltransferase activities in the carcinomatous tissue . gamma-glutamyl-transpeptidase activity , a marker of neoplastic cell growth in experimental hepatocarcinogenesis , did not differ between tumorous and nontumorous tissue areas .
C0006826
carcinomatous
C0027651
tumorous