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Effect of 5-aminolevulinic acid (ALA) on expression of metabolites (A) superoxide-dismutase (SOD), catalase (CAT), and glutathione-peroxidase (GPx) and (B) malondialdehyde (MDA) in second stage juveniles of Meloidogyne incognita as compared to the water control. Means are average of six replications. Error bars indicate the standard error.
