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. 2010 Jul 14;117(2):263–269. doi: 10.1093/toxsci/kfq216

FIG. 2.

FIG. 2.

Effect of prenatal exposure to MeHg on BDNF levels. (A) No effect of either Hg or maternal smoking is detected in boys, whereas maternal smoking increases BDNF serum concentration in girls. (B) Predicted trends for gestational week 40 derived from the supervised model (see Table 4). Note that the negative effect of prenatal exposure to MeHg on BDNF serum concentration increases with the number of cigarettes per day the mother smokes. Also note that the model does not predict extreme BDNF concentrations (panel furthest to the right) but explains variations around the average.