Samples	EC50 ______________________________________________________________ S-Methyl- ITU S-Ethyl- ITU S-Isopropyl- ITU S-Aminoethyl- ITU S-2-Iminop iperidine- ITU
rat macrophage J774.2 cell (iNOS) mouse macrophage J774.2 cell (iNOS) mouse macrophage J774.2 cell (iNOS) rat aortic smooth muscle cell (eNOS) rat aortic smooth muscle cell (eNOS) human iNOS human nNOS human eNOS	6.0μM 2.0μM 2.0μM 3.0μM 　 8.0μM 21μM 　 　 1.0μM 6.0μM 　 　 3.5μM 7.5μM 　 　 19μM 2.0μM 　 　 　 　 1.0μM 4.7μM 1.1μM