"... one of the virtues of Creager's admirable book is that the attentive, even if scientifically uninformed, reader will learn a great deal, not only about these subjects but more generally about the character of during the last two-thirds of the twentieth-century. By tracking the history of from the applied realm of through its acceptance as —a widely and conventionally accepted laboratory tool—Creager traces more general trends in the development of , genetics, and . ... The power of Creager's method lies in how it underlines the dynamic set of relationships between ideas and experimental practice, between the laboratory and its sources of support."