The effect of ritanserin ( 5-HT2 antagonist ) on scopolamine ( muscarinic cholinergic antagonist ) -induced amnesia in Morris water maze ( MWM ) was investigated .
O O O B-ChemicalEntity O B-GeneOrGeneProduct O O O B-ChemicalEntity O B-GeneOrGeneProduct I-GeneOrGeneProduct O O O B-DiseaseOrPhenotypicFeature O O O O O O O O O O