Source google image: https://www.researchgate.net/profile/AC_Colonese/publication/279013190/figure/fig3/AS:294393459298305@1447200278130/Bulk-collagen-d-13-C-and-d-15-N-values-Distribution-of_Q320.jpg
Schema electrique wayne dalton
Source google image: https://www.researchgate.net/profile/AC_Colonese/publication/279013190/figure/fig3/AS:294393459298305@1447200278130/Bulk-collagen-d-13-C-and-d-15-N-values-Distribution-of_Q320.jpg