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Endogenous growth hormone peptides, like CJC 1295 and Ipamorelin, stimulate the body's natural GH production, maintaining the pituitary's function and natural feedback mechanisms. Unlike regular growth hormone, they mimic the body's pulsatile GH GHK Cu Copper Peptide Regeneration Review (2018) Research Summary Hairgenetix downregulation ghk cu tolerance downregulation desensitization effectiveness over time Frontiers Are We Ready to Measure
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