1Fhurgott RF,Zavadzki JV.The obligatory role of endothelial cells in the relaxation of aterial smooth muscle by acetylcholine[J].Nature,1980,288:373-376.
4Martin W,et al.Evidence that inhibitory factor extracted from bovine retracter penis is nitrite whose acide-activative is stabilized nitric oxide[J].Br J Pharmacol,1988,93:579.
5Miler V Met al.Am[J].Physiol,1988,255:H446.
6Fozard J H et al.B r[J].Phamacol,1992,105(3):744.
7Meller ST et al[J].Pain.1993,52:127-136.
8Strolin-Benedetti M,Dostert P,Marrari P,et al.Effect of ageing on tissue livels of amino acids involved in the nitric oxide pathway in rat brain.[J]Neural Yransm Gen Sect,1993,94(1):21-30.
