Abstract
Summary
The rate of tumor production with ultraviolet light could be altered by the local application of certain substances to the tissues developing tumors. Of the oils tried, mineral oil accelerated tumor development most rapidly; cottonseed oil, olive oil, and wheat germ oil caused slight acceleration; linseed oil retarded tumor formation. Cholesterol in oil caused marked acceleration. Peroxides were without effect. 1,2,5,6, dibenzanthracene was also without effect.
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