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Fig. 3 | Annals of Microbiology

Fig. 3

From: External spermine prevents UVA-induced damage of Synechocystis sp. PCC 6803 via increased catalase activity and decreased H2O2 and malonaldehyde levels

Fig. 3

The relative contents of hydrogen peroxide (a) and malonaldehyde (b) generated by UVA radiation in Synechocystis cells grown in BG11 medium with or without Spm supplementation. The BG11 media with Spm at 0.5 mM concentration (closed symbols) and without Spm (open symbols) were used to grow Synechocystis sp. PCC 6803 cells under normal growth light (NL, triangle) and UVA radiation (circle). The 100% of each control data is derived from the hydrogen peroxide and malonaldehyde of 70 nmol per mg protein and 0.11 nmol per mg protein, respectively. Data represent mean ± S.D. (n = 3)

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