Abstract
This experiment investigated the effect on ultraviolet (UV) radiation-induced tumorigenesis of feeding the histamine type 2 receptor antagonist, cimetidine, to Skh:HR mice. Cimetidine was fed to one group during a 70 day period of chronic UVR (5 days/week for 10 weeks), to a second group from the end of this period to the end of the experiment at 286 days and a third group was fed a control diet only throughout the experiment. Feeding mice cimetidine during the 70 day period of irradiation protected them against the later development of skin tumours.
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