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Cell proportion differences inferred from scRNA-seq data should be interpreted cautiously
Purity, dosing, long-term outcomes, and safety are not well established in human trials
GHK-Cu chelates copper(II) ions and delivers them to cells, activating copper-dependent enzymes essential for collagen crosslinking, antioxidant defense, and tissue remodeling
Any statements about in-use shelf life are therefore illustrative only and cannot be relied upon as clinical guidance
The conservative approach is to continue using the vial but be aware that effectiveness may be reduced
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