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GHK-Cu peptide may act upstream of both pathways, possibly by modulating copper-dependent enzymatic activity or gene regulatory networks
This is why pernicious anemia is considered an autoimmune disease
For skin, hair, and nail benefits, it may take 6 to 8 weeks as these tissues take longer to grow and show visible changes
So the defensible position on BPC-157 vs TB-500 is that both show reproducible, mechanistically interesting healing and angiogenic effects in preclinical systems, but neither has demonstrated safety or efficacy in adequately powered human trials
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