Delayed effects of acute oral and chronic inhalational exposure to methylparathion on learning and memory in rats.


Impairment of acquisition phase of the learning process was observed in rats even at 3 weeks after single oral exposure to the near-lethal dose of commercial grade methylparathion (MP) followed by atropine resuscitation. Though there was a trend towards memory impairment in this group of animals, memory retention was not significantly affected. Chronic… (More)


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