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But, the marvel doesn't end there

Energy balance refers to the equilibrium between the amount of energy absorbed from food and the amount expended through the metabolic activities of the organism, the thermic effect of food, and the energy excreted in the feces or urine

Speilberg, S

doi: 10.1001/jama.2019.10298 47

Notice that the carbonyl carbon is also counted: Amides are essential in chemistry and biology as they are part of many peptides and nucleobases

Funding We acknowledge financial support from the National Key R&D Program of China (2022YFA0912800), National Excellent Young Scientists Fund (00308054 A1045), National Natural Science Foundation of China (22178233), Talents Program of Sichuan Province, Double First-Class University Plan of Sichuan University, State Key Laboratory of Polymer Materials Engineering (sklpme 20200301), Tianfu Emei Program of Sichuan Province (2022-EC02-00073-CG), Postdoctoral Special Funding of Sichuan Province (TB2022063), Postdoctoral Funding of Sichuan University (2022SCU12099), Ministry of Education Key Laboratory of Leather Chemistry and Engineering, and National Engineering Research Center of Clean Technology in Leather Industry