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. 2022 Apr 27;12:6840. doi: 10.1038/s41598-022-10912-7

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Rate of superoxide radical (O₂^·−) generation (a) and hydrogen peroxide (H₂O₂) levels (b) in leaves of Lonicera japonica Thunb. cuttings exposed to different concentrations of Cd. Different letters indicate a significant difference (P < 0.05) based on Duncan’s multiple range test at 5% level. Values are the mean ± SD (n = 3).