"[Using Robley Williams's] density, I calculated the number of polynucleotide chains
per unit to be exactly three. This result surprised me, because I had expected the
value two if the nucleic acid fibres really represented genes. I decided, however,
that probably the fibres were artefacts, produced by the process of extraction...I
am now astonished that I began work on the triple helix structure, rather than on
the double helix."
Linus Pauling. "The Molecular Basis of Biological Specificity" Nature, 248: 771. 1974.
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