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Collagen is the primary protein responsible for the skin's strength and elasticity, and as we age, its production naturally declines
This structural formula has an unusual peptide bond, usually processed from glutamate to -carboxyl group (-COOH) has a close relationship with cysteine alpha - a peptide bond made by the contraction of amino -(-NH2)
In sharp contrast, Eslami Shahrbabaki et al
Strategies to break them: Caloric cycling: Instead of eating the same amount every day, vary intake
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