tokens: The broad range protein tyrosine kinase inhibitor genistein and the phosphatidylinositol 3 - kinase inhibitors wortmannin and LY 294002 ( 2 - ( 4 - morpholinyl ) - 8 - phenyl - 4H - 1 - benzopyran - 4 - one ) also blocked adenosine A3 receptor stimulation of p42 / p44 MAPK .