Inhibition of photolabeling by 20-125I-14,15-EE8ZE-APSA of the 47 KDa protein in U937 cell membranes by three structurally unrelated EET receptor ligands, miconazole, ketoconazole and MS-PPOH. Autoradiographs indicating: A, inhibition of labeling by various concentrations of miconazole and ketoconazole and B, inhibition of labeling by various concentrations of MS-PPOH. The experiment was repeated four times. 47 KDa protein is indicated with “>”.