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Credit
Diagram referenced as "E.D. [electron density] distribution in Vitamin B12". Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.
Provider
The original material is held at King's College London, Archives and Special Collections. This catalogue is held by the Wellcome Library as part of the Codebreakers: Makers of Modern Genetics programme.