Proceedings of the National Academy of Sciences · 1961 · 404 citations · 7 references
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
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The disulphide bonds of insulin
A. Ryle, Frederick Sanger, L. Smith et al. · Biochemical Journal · 1955 · 928 citations · Full text