“Purposely removing the endothelium led to a complete loss of the relaxation responses.2.Thimerosal was at least as efficacious as A23187 in … appreciable effect by itself, potentiated the relaxing response to acetylcholine in endothelium-intact preparations.4.Endothelium-dependent relaxations induced by larger concentrations of thimerosal, … nordihydroguaiaretic acid, ….”