The changes of the nitric oxide synthase(NOS) positive neurons number were studied with using NADPH-diaphorase histochemical staining method in the retina of spontaneously hypertensive rats(SHR)and Wistar Kyoto rats(WKY).

• 本实验用NADPH－黄递酶（NDP）组织化学染色法观察了自发性高血压大鼠（SHR）和京都种大鼠（WKY，正常对照）视网膜内一氧化氮合酶（NOS）的变化。