Neuronal PTEN expression in rat hippocampus CA<sub>1</sub> and cerebral cortex and subcortical region were measured by immunohistochemistry analysis.

<p>Quantitative analysis of neuronal PTEN expression hippocampal CA<sub>1</sub> (A) and cerebral cortex and subcortical region (C) in Control, K<sub>1</sub> and K<sub>2</sub> group. Representative PTEN expression positive neurons (yellow) of hippocampal CA<sub>1</sub> (B) and cerebral cortex and subcortical region (D). n = 6; *p<0.05 compared with Control group.</p>