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Limitations include: Enzymatic and chemical degradation Poor membrane permeability Comparatively large molecular size When a peptide like epithalon is unmodified, bioavailability may be less than 1%
Promotes cell protection explored for how it may safeguard cells under stress in experimental models
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And at the level of cell membranes , glutathione helps protect the fatty layer that surrounds each cell, keeping it intact and able to absorb nutrients and communicate properly