求翻译：由于很难获得非难治性癫痫患者的脑组织作对照研究，只能比较IE患者与正常人脑组织中P糖蛋白的表达是否有差异。是什么意思？

Because it is difficult to obtain non-refractory epilepsy in brain tissue for control studies, only patients with IE compared with normal brain tissue in the expression of P-glycoprotein whether there are differences.

The difficult access to impugn the cure epilepsy patients with brain research, comparison can only be compared with patients with normal human brain IE P sugar protein expression of organization whether there are differences.

Because very difficult to attain can it be that the difficult epilepsy patient's brain organization to do the comparison research, only can compare the IE patient and the normal human brain organizes the P glycoprotein expression whether has the difference.

Because it is difficult to obtain disapproval for comparative study of brain tissue in patients with refractory epilepsy, can only compare IE patients and normal persons of p-glycoprotein expression in the brain tissue is varied.

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