Objective: To evaluate the nitric oxide(NO) levels in rat brain cortex and hippocampus after chronic mild stress.

• 目的:观察慢性应激(chronic mild stress,CMS)抑郁模型大鼠局部脑区一氧化氮(nitric oxide,NO)含量的变化,结合行为学改变,探讨抑郁的发病机理。