Fig. 2From: Rickettsia parkeri colonization in Amblyomma maculatum: the role of superoxide dismutasesKnockdown of tick SODs in naïve (uninfected) A. maculatum and the effect on tick antioxidants. a  Cu/Zn-SOD, b  Mn-SOD, c  Cu/Zn-SOD + Mn-SOD dual knockdowns. Gene expression in naïve ticks was normalized against tick β-actin, used as the reference gene. The transcript levels of the target genes in dsLacZ injected tick tissues were made equal to 1 and represented by a dashed line in the graphs. KD; KnockdownsBack to article page