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EGF is bioactive but barrier-limited: the molecule does what it does only if it reaches the keratinocyte layer, and standard topical formulations deposit most of it on the stratum corneum where it has no relevant receptor

Their small, linear structures facilitate easier synthesis, high water solubility, and effective diffusion across biological barriers

The c-Met is present in hematopoietic progenitor cells from human bone marrow and peripheral blood and in the presence of erythropoietin, HGF induces proliferation and differentiation of erythroid progenitors [43]

This positions copper peptide as relatively safe for breaks, cycling, or discontinuation compared to more aggressive treatments requiring continuous use for maintaining results or risking rebound worsening

Interestingly, the expression of C3 was increased in treated astrocytes but did not reach significance (Figure 7)

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