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What Makes GHK-Cu Copper Peptides Blue
The reviews were generally positive and dissatisfied users often complained that their kit leaked or was uncomfortable to use
The compound functions as a non-selective agonist of the melanocortin receptor family, exhibiting activity across multiple receptor subtypes including MC1R, MC3R, MC4R, and MC5R
It differs from the native 70 residue growth factor in two respects: glutamate at position 3 is replaced by arginine, and a hydrophobic 13 residue extension (MFPAMPLLSLFVN) is fused to the N-terminus
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