Rauth et al 2012 report that prenatal exposure to chlorpyrifos, measured in umbilical cord blood, is associated with neurobehavioural deficits in humans and animals. Affected are, alertness, emotions, control of impulse and social relationship. Rauth and colleagues found in their study more than 4,39 Pikogramm Chlorpyrifos/gram umbelical blood., which is even rather low, compared to samples of the blood bank of Cincinnati whhich present an average 9,9 Pikogramm pro Gramm. [1]