Carbon-13

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You answered a 10 year old question on the talk page. Did you have look how much changed since the user looked at the article? The article did not contain any biology section. [1]--Stone (talk) 10:11, 12 April 2016 (UTC)Reply

Yes, you are right, I forgot to take a look at the old version of the article... Indeed, section about science use was absent.Ivan Kucherenko (talk) 10:29, 12 April 2016 (UTC)Reply