Fig. 5

qPCR study for catalase expression in the original laboratory Ls A strain (sensitive to H₂O₂, adult females). Ls A 0 ppm: unexposed lice (n = 5; white rectangles); Ls A 600 ppm: lice exposed to 600 ppm H₂O₂ for 30 min (n = 5; grey rectangles; unaffected after the exposure). Solid lines represent the arithmetic mean in each group. Data shown as fold change (log2^{−(∆∆Cq)}) referred to Ls A 0 ppm lice (calibrator sample). Statistical analysis was not performed due to the low sample size in each group