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Start Over You searched for: Creator Cohen, S. N. (Stanley Norman) ✖ Remove constraint Creator: Cohen, S. N. (Stanley Norman) Creator National Academy of Sciences (U.S.) ✖ Remove constraint Creator: National Academy of Sciences (U.S.) Creator Hogness, David S. ✖ Remove constraint Creator: Hogness, David S. Language English ✖ Remove constraint Language: English Subject DNA, Recombinant ✖ Remove constraint Subject: DNA, Recombinant