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After the topical copper peptide wave hit Manila, the next frontier has quietly arrived: GHK-Cu in injectable form, marketed as a “peptide pen” by overseas longevity sites and resold by local importers.

Why does biochemistry still use D and L for sugars and amino acids

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Treated cells in HN conditions showed upregulated purine metabolism and collagen synthesis, and, interestingly, a component of kinetochore, Zwilch (Zwilch kinetochore protein) was upregulated