The most common trigger for senescence is the telomere shortening, limiting the number of population doubling (pd) from 2 to 40 pd for adult melanocytes 21
It's an antioxidant produced in the liver that supports immune function, protects against oxidative stress and free radicals, and repairs cells
Rhie, G
A warning on one online listing claims the product is: "For laboratory and analytical research use only
Proteomic analysis Cells were seeded in 10-cm dishes and cultured for 7 days in cystine-free medium supplemented with heavy isotope-labelled 13 C 6 , 15 N 2 -cystine (Cambridge Isotope Laboratories, CNLM-4244-H)
Miao Y, Lv D, Wang P, Wang XC, Chen J, Miao C, Song CP (2006) An Arabidopsis glutathione peroxidase functions as both a redox transducer and a scavenger in abscisic acid and drought stress responses