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Theranostics 2021, 11 (9), 4351 4362, DOI: 10.7150/thno.52436123Ultrasound-mediated augmented exosome release from astrocytes alleviates amyloid--induced neurotoxicityDeng, Zhiting

The "GHK" designation comes from the single-letter amino acid codes: G = Glycine H = Histidine K = Lysine (using K because L was already assigned to Leucine) Natural Occurrence and Age-Related Decline In human plasma, GHK-CU levels start at approximately 200 ng/mL at age 20

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