Objective : To study the effects of maternal separation stress on learning and memory and the hormone levels and NMDA receptor subunits NR1 expression in hippocampus of immature rats.

• 目的:探讨母婴分离应激对幼年大鼠学习记忆能力,体内激素水平及海马内NMDA受体亚基NR1表达水平的影响关系。