Ralph Heywood Quotes
Ralph Heywood Quotes. Below is a collection of famous Ralph Heywood quotes. Here you can find the most popular and greatest quotes by Ralph Heywood. Share these quotations with your friends and family.
… Predictions of carcinogenicity from laboratory animals are without meaning for there is no evidence that the studies were conducted in a way that took into consideration the pharmacodynamics in the species investigated, or with any appreciation of end organ sensitivity (with respect to contraceptive steroids).
By Ralph Heywood
