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The upregulated expression of ZIP7 facilitates the proliferation and aggression of tamoxifen-resistant MCF-7 cells by activating epithelial growth factor receptor (EGFR), insulin-like growth factor receptor 1 (IGF1R), and tyrosine kinase Src
W Aoi, Y Ogaya, M Takami, et al
The peptides activity does not require a delivery vehicle and is preserved across oral, intraperitoneal, and topical administration routes 2
Testosterone and Hormonal Context Whilst GHK-Cu itself does not directly alter testosterone levels based on available research, some interest exists in understanding how peptide compounds interact with hormonal systems
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