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By Carl Zimmer
Feb 17, 2008 4:46 AMMay 21, 2019 5:33 PM


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Esther Kieserman writes: "it is the general formula of an Ester functional group (R-COOH-R). it has R and R' groups to represent the carbons attached to it on eitherside. i got it as a "got into grad school" present to myself when i graduated college. i am currently getting my PhD in molecular biology (specifically development) but have a chemistry name so i got this tattoo to represent my love of science."

Click here to go to the full Science Tattoo Emporium.

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