The antioxidant index in each H 2 O 2 -damaged group showed an increasing trend at first, followed by a decreasing trend, with a turning point at 8 h of H 2 O 2 -induced damage.
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Pre-Protection and Mechanism of Crude Extracts from <i>Dioscorea alata</i> L. on H<sub>2</sub>O<sub>2</sub>-Induced IPEC-J2 Cells Oxidative Damage.
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The sentences
With the passage of time, the survival rate of cells showed a trend of first increase and then decrease after adding 40–160 μmol/L H 2 O 2 , and reached the highest when the cells were injured for 6 h, and the survival rate of cells decreased sharply when the cells were injured for 8 h. 3.2.