[The modifying effect of long-term administration of ascorbic acid with drinking water on asbestos-induced pleural carcinogenesis in Wistar rats]. 
Ascorbic acid administered with drinking water, in a concentration of 2.5%, together with sucrose (1%) was found to significantly inhibit the development of mesothelial and pleural tumors induced in Wistar rats by asbestos treatment.  Said agents, however, failed to influence spontaneous carcinogenesis.