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Figure 2. Biochemical analyses in OP-exposed individuals: A) Shown are the activities of AChE (nmol/min*ml) in exposed subjects (n =29) compared to the Israeli non-exposed population (n =91); BChE (mmol*10/min*ml); PON (nmol/min*ml) and arylesterase (µmol/min*ml) (*P <0.001). B) AChE and PON activities segregated by the PON1 55/192 genotype combinations: LLRR (n =3), LLQR (n =6), LLQQ (n =8), LMQR (n =2), LMQQ (n =5), MMQQ (n =6). In all graphs: open bars represent non-exposed group; filled bars, exposed group.