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The WT C57BL/6 mice were purchased from Jackson Laboratory
Proline is also classified as an aliphatic amino acid, but the hydrocarbon side chain has cyclized with the terminal amine, creating a unique 5-membered ring, non-aromatic ring structure
Sources and Supplementation of Vitamin B12 Vitamin B12 is naturally found in animal products, including fish, meat, poultry, eggs, milk, and milk products
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