A transient transfection assay revealed that two signals , PMA and cAMP , are required for optimal activation of the IL-5 promoter .
a transient transfection assay revealed that two signals , pma and camp , are required for optimal activation of the il-5 promoter .
O B-other_name I-other_name I-other_name O O O O O B-other_organic_compound O B-nucleotide O O O O O O O O B-protein_molecule O O