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Start Over You searched for: Creator Imperial Cancer Research Fund (Great Britain). Laboratories ✖ Remove constraint Creator: Imperial Cancer Research Fund (Great Britain). Laboratories Creator Ward, David C. ✖ Remove constraint Creator: Ward, David C. Subject DNA ✖ Remove constraint Subject: DNA Subject Simian virus 40 ✖ Remove constraint Subject: Simian virus 40 Genre Letters (correspondence) ✖ Remove constraint Genre: Letters (correspondence) Story Section Restriction Enzymes and the "New Genetics," 1970-1980 ✖ Remove constraint Story Section: Restriction Enzymes and the "New Genetics," 1970-1980 Exhibit Tags enzymes ✖ Remove constraint Exhibit Tags: enzymes