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Materials and methods Animals Adult (810weekold), male C57BL/6 mice (Jackson Laboratories, Bar Harbor, ME) weighing between 20 and 25 g were used
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da Silva N, Augustin M, Hilbring C, von Stlpnagel CC, Sommer R
![tretinoin vs ghk cu GHK-Cu Tretinoin: Copper Peptide or Retinoid for Anti-Aging? [2026] Ghk Cu Vs Tretinoin For](https://neuroganhealth.com/cdn/shop/articles/819782124a29647d6435f6f8f6cda2d5.jpg?format=webp&v=1771280585&width=320)
Physicochemical characterization included particle size distribution, polydispersity index (PDI), and zeta potential (ZP) analysis by dynamic light scattering (DLS), with measurements performed in triplicate (Table 1)
![tretinoin vs ghk cu GHK-Cu Tretinoin: Copper Peptide or Retinoid for Anti-Aging? [2026] Ghk Cu Vs Tretinoin For](https://miro.medium.com/1*17thZWXFzZWCRgf4UELBIg.png)
Because BPC-157 is an investigational compound, its interactions with other medications have not been fully studied
![tretinoin vs ghk cu GHK-Cu Tretinoin: Copper Peptide or Retinoid for Anti-Aging? [2026] Ghk Cu Vs Tretinoin For](https://www.mdpi.com/molecules/molecules-30-00136/article_deploy/html/images/molecules-30-00136-g007-550.jpg)
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