Lithospermum ruderale and the Incidence of Mammary Tumors in Mice. ∗

Abstract

Summary

Ground Lithospermum ruderale, administered by drug-diet methods, lowered the incidence of mammary tumors from 58.1% to 2.8% in C₃H mice and from 96.6% to 21.9% in ZD₈F_i mice. The exact roles played by the drug and by possible diet restriction were not determined.