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Start Over You searched for: Creator Cohen, S. N. (Stanley Norman) ✖ Remove constraint Creator: Cohen, S. N. (Stanley Norman) Creator Boyer, Herbert W. ✖ Remove constraint Creator: Boyer, Herbert W. Creator National Academy of Sciences (U.S.) ✖ Remove constraint Creator: National Academy of Sciences (U.S.) Subject DNA, Recombinant ✖ Remove constraint Subject: DNA, Recombinant