Pretreatment of monocytes with pertussis toxin inhibited these functions of PAF , whereas cholera toxin had no inhibitory effect .
pretreatment of monocytes with pertussis toxin inhibited these functions of paf , whereas cholera toxin had no inhibitory effect .
O O B-cell_type O O O O O O O B-protein_molecule O O B-other_organic_compound I-other_organic_compound O O O O O