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Experimental Gerontology (2020) 12
Upper arm: Back of the arm, midway between shoulder and elbow
If you watched that episode a week or two ago, we talked about this
PMID: 568769 Graf MV, Kastin AJ
Mechanism: Matrixyl is a matrikine a peptide fragment that mimics collagen breakdown products
Some people may be born with a change in the GSS gene responsible for producing glutathione synthetase, the enzyme that produces glutathione
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