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Yang J, Chen F, Lang L, Yang F,Fu Z,Martinez J, Cho A, Saba NF,Teng Y

B12 is an important nutritional supplement that supports the overall functioning of the body

Williamson, M

doi: 10.1016/1044-0305(95)00524-H

During the catalytic cycle of GPX4, the active selenol (-SeH) is oxidized by peroxides to selenenic acid (-SeOH), which is then reduced with glutathione (GSH) to an intermediate selenodisulfide (-Se-SG)

Practical rules: Store in the original dark vial or wrapped in aluminum foil Dark box in the refrigerator No work light during handling (not strictly necessary, but ideal to work in dim lighting) Brief exposure during reconstitution and measurement is fine Long-term storage in light can degrade activity over weeks Practical storage rules Allow the vial to warm to room temperature (15 to 20 min) before opening