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The expression of ChaC2 increases with progression of lymph node metastasis and the stage of breast cancer, aligning with findings of GGT loss (61) and increased ChaC1 expression (77) in breast cancer cells
A faint blue-green tint at the injection site is sometimes reported and is associated with the copper in GHK-Cu (cosmetic only)
Validity Period Verification Process Accelerated test Condition: 402/75%RH5%RH for 6 consecutive months
Wrong Preservative or Wrong Concentration Some counterfeit products substitute or under-dose the benzyl alcohol: Too little benzyl alcohol (below ~0.9%) fails to suppress microbial growth
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