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Periodical. Nester, Eugene W., A. T. Ganesan, and Joshua Lederberg. "Effects of Mechanical Shear on Genetic Activity of Bacillus subtilis DNA." Proceedings of the National Academy of Sciences of the United States of America 49, 1 (January 1963): 61-68. Article. 8 Images.. Proceedings of the National Academy of Sciences of the United States of America. Lederberg UI. P104