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Antioxidant Protection: UV radiation generates free radicals, which cause oxidative stress and damage skin cells
After initial correction, some individuals may require ongoing maintenance injections (often monthly) if they cannot adequately absorb B12 from diet or oral supplements
Its structure and stability make it a frequent subject of study in controlled experimental settings
Neither is strictly "better," as they serve different roles
10.1073/pnas.1002459107 271 SyedN.LangerJ.JanczarK.SinghP.Lo NigroC.LattanzioL.et al
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