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doi:10.1016/j.molbiopara.2009.12.011
Akerman AP et al (2025) External validation of artificial intelligence for detection of heart failure with preserved ejection fraction, (in eng)
Key Takeaways GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) has a molecular weight of roughly 340 Da, placing it below the theoretical 500 Da skin-penetration cutoff, but real-world dermal delivery without a penetration enhancer is limited and superficial
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