Technology using isotope tracers (e.g., C-13 labeled glucose and amino acids) allows for the study of metabolism in living mice.

“Jafra bennewitz and i have invested a lot of effort in developing technology to use isotope tracers this would be c-13 labeled glucose and amino acids and so forth and to deliver them to living mice running around and doing normal mice things in a cage and then look to see how they're used and how different tissues use them and how there's nutrients sharing between tissues”