User contributions for 100255311

A user with 5 edits. Account created on 16 November 2010.
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20 November 2011

11 November 2011

10 November 2011

3 January 2011

  • 17:4617:46, 3 January 2011 diff hist +430 N Purine Created page with 'A Purine is a nitrogenous base consisting of a double ring structure (one 5 membered ring and one 6 membered ring) which makes up half of a rung in a DNA ladder. They are also pr…'