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Start Over You searched for: Creator Nathans, Daniel, 1928-1999 ✖ Remove constraint Creator: Nathans, Daniel, 1928-1999 Language English ✖ Remove constraint Language: English Format Text ✖ Remove constraint Format: Text Subject BALB 3T3 Cells ✖ Remove constraint Subject: BALB 3T3 Cells Subject Simian virus 40 ✖ Remove constraint Subject: Simian virus 40 Genre Laboratory notebooks ✖ Remove constraint Genre: Laboratory notebooks Exhibit Tags enzymes ✖ Remove constraint Exhibit Tags: enzymes