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Periodical. Hayashi, M., M. N. Hayashi, and Sol Spiegelman. "Restriction of In Vivo Genetic Transcription to One of the Complementary Strands of DNA." Proceedings of the National Academy of Sciences of the United States of America 50, 4 (October 1963): 664-672. Article. 5 Images.. Proceedings of the National Academy of Sciences of the United States of America