Illustration of the DNA double helix. The sugar-phosphate backbone of the two complementary strands are visible (red and blue).

    • Susan Lockhart
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    Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

    Credit: Illustration of the DNA double helix. The sugar-phosphate backbone of the two complementary strands are visible (red and blue). Susan Lockhart. Source: Wellcome Collection.

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