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Periodical. Varmus, Harold, Peter K. Vogt, and J. Michael Bishop. "Integration of Deoxyribonucleic Acid Specific for Rous Sarcoma Virus after Infection of Permissive and Nonpermissive Hosts." Proceedings of the National Academy of Sciences of the United States of America 70, 11 (November 1973): 3067-3071. Article. 5 Images.. Proceedings of the National Academy of Sciences of the United States of America