Fig. 5.

Effect of prenatal exposure to chlorpyrifos (CPF) on thigmotactic behavior during the acquisition phase of the Morris water maze. Thigmotactic behavior was defined by the % of time (A) and % of distance (B) that animals swam within a 20 cm-wide zone around the tank wall. Data points and error bars represent mean and SEM, respectively, of results obtained from the same animals as in Fig. 1C. According to the Tukey-Kramer post-hoc test for parwise comparisons: *, p < 0.05 PO males vs. CPF males; †, p < 0.05 PO males vs. PO females.