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Periodical. Baxt, W. G., J. W. Yates, H. J. Wallace Jr, James F. Holland, and Sol Spiegelman. "Leukemia-Specific DNA Sequences in Leukocytes of the Leukemic Member of Identical Twins." Proceedings of the National Academy of Sciences of the United States of America 70, 9 (September 1973): 2629-2632. Article. 4 Images.. Proceedings of the National Academy of Sciences of the United States of America