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ARTICLE PDF AUTHOR INFORMATION CONSORTIA A CORRESPONDENT RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE A Correspondent. Cell Biology: Nucleic Acids and
Genes. _Nature_ 220, 1075 (1968). https://doi.org/10.1038/2201075a0 Download citation * Issue Date: 14 December 1968 * DOI: https://doi.org/10.1038/2201075a0 SHARE THIS ARTICLE Anyone you
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