Methods The levels of PLP gene expression were analyzed by semi-quantitative RT-PCR in the visual cortex of juvenile and adult rats.

• 方法采用半定量RT-PCR方法,分析处于视觉可塑性关键期内的幼年大鼠和处于视觉可塑性关键期后的成年大鼠视皮层中PLP基因的表达水平。