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They examined the effects of cigarette smoke exposure to the vocal fold tissue using viable porcine vocal fold and human vocal fold fibroblasts

Molecular carcinogenesis 52, 247254, 10.1002/mc.21851 (2013)

& Brough, D

Furthermore, glutathione controls the immune response by preserving redox equilibrium inside immune cells, allowing them to operate optimally [92]

The long name covers a nice sunscreen agent and quite a special one at that: It's a " hybrid " sunscreen meaning it's half-way between physical (the ones that, at least partly, reflect the sun) and chemical agents (that absorb the rays, which most sunscreens do)