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After vigorous vortexing, this solution was centrifuged (7000 × g for 5 min) and then the bottom layer was collected for spectroscopic analysis and diluted in HCl 3M/MeOH 1:3 https://open.lib.umn.edu/app/uploads/sites/211/2018/05/112-1024x356.png Size:50mL - unscented Muscle Building Copper Peptide Serum Ghk-cu 0.5% • Blue Anti-aging Face Serum • Beautylabpro - Etsy
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