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Changes in contents of selected isoprostanoids for the diatom Phaeodactylum tricornutum between the control condition (CTL) and oxidative stress (Cu2+ and H2O2) conditions. Statistically relevant responses between the control and stress conditions (one-way ANOVA) are indicated by asterisks: * p < 5 × 10−2, ** p < 5 × 10−3, *** p < 5 × 10−4 and **** p < 1 × 10−4; ns, not significant.
