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Peptides like GHK-Cu (copper tripeptide-1) are legal for cosmetic use and commonly found in skin care products
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Nakkarach A, Foo HL, Song AA-L, Mutalib NEA, Nitisinprasert S, Withayagiat U (2021) Anti-cancer and anti-inflammatory effects elicited by short chain fatty acids produced by Escherichia coli isolated from healthy human gut microbiota
Lopez-Bueno, R., et al
What they did: Obese mice received AOD-9604 orally (via gavage) for 14 days at various doses (50, 250, 500 g/kg)
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