To explore the mechanisms of Tat-induced IDO expression , slices were pretreated with the p38 mitogen-activated protein kinase ( MAPK ) inhibitor SB 202190 for 30 min before Tat treatment .
O O O O O B-GeneOrGeneProduct B-GeneOrGeneProduct O O O O O O O B-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct O B-GeneOrGeneProduct O O B-ChemicalEntity I-ChemicalEntity O O O O B-GeneOrGeneProduct O O