A.The endocannabinoid system has two endogenous ligands, 2-AG and anandamide, which are degraded by MAGL and FAAH, respectively, to terminate their action on the CB1 receptor. B. Brain 2-AG, anandamide and arachidonic acid levels of mice treated with 9 OP and TC pesticides. C. Degree of catalepsy, scored as seconds that a mouse is unresponsive on a bar during a 60 second period. Data represent n=3 mice group, with significance expressed as **p<0.01 compared to control. Data are given as mean ± standard error.