acid, nitric acid, perchloric acid, sodium chloride, potassium chloride and
magnesium chloride were purchased from Guangzhou Chemical Reagent Factory.
Thiazolyl blue tetrazolium bromide (MTT), DMSO, phosphate buffer, DMEM media,
ascorbic acid, Na2SeO3, ethyleediaminetetraacetic acid
(EDTA) and 2, 7-dichlorodihydrofluorescein diacetate (DCFH-DA) were procured
from Sigma-Aldrich. EDTA-free mini protease inhibitor tablet was purchased from
Thermo Scientific. The ultrapure water from Milli-Q water purification system
(Milipore) was used in all experiments.