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Importantly, H 2 O 2 is able to diffuse through membranes via aquaporins and reacts strongly with seleno groups and protein cysteine thiols (-SH) which forms the basis of antioxidant defense and redox signaling (Finkel, 2013a)

Kuipers A, Rink R, Moll GN (2009) Translocation of a thioether-bridged azurin peptide fragment via the sec pathway in Lactococcus lactis

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Others follow conservative USP guidelines that may actually give you less time than 21 days, depending on the formulation category
