Fig. 2.

Effect of CPO exposure (0.75 mg/kg) on subsequent toxicity of malaoxon (MO). Mice (genotypes as indicated) were exposed dermally to MO alone (a, b), or to CPO followed 4 hours later by MO exposure (c, d, e, f). AChE was measured in the brain (a, c, e) and diaphragm (b, d, f) 4 hours following the MO exposure. Results represent the mean ± SEM (n = 4). Reproduced from Jansen et al. (2009) with permission