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Sources NIH: Vitamin B 12 Status and Optimal Range for Hemoglobin Formation in Elite Athletes Inside Tracker: Vitamin B12 Absorption and Mature Athletes Healthspan Elite: Vitamin B, vitamin B12 guide for athletes: foods and deficiency Cambridge University Press: The effect of vitamin B12 on physical performance capacity

Briefly, 60 L of serum was added in 20 L of 6 N Perchloric acid (PCA)

doi: 10.1038/nrn3820 204 JordaoLLengelingABordatYBoudouFGicquelBNeyrollesOet al

The GCGR component is particularly important for researchers studying energy expenditure rather than just appetite suppression

These results are based on rodent research on mice that were affected by an Achilles tendon rupture