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In this excerpt, Toulmin provided some of the intellectual context in which Avery, MacLeod, and McCarty's 1944 article was published, and therefore some reasoning as to why the three were not bolder with their claims that DNA was genetic material.
Monograph. Toulmin, Stephen. [Excerpt from "Human Understanding, Volume 1: General Introduction and Part I"]. Human Understanding: General Introduction and Part I. Princeton University Press, 1972. Pp. 233-234. Excerpt. Monograph. 2 Images.