Methods Reverse transcription polymerase chain reaction(RT-PCR) technique was used to examine the levels of expression of COX-2 mRNA and Fas mRNA in ATs tissue and non-tumor tissue.

• 方法:应用RT-PCR技术检测不同级别星形细胞肿瘤组织及非肿瘤组织中COX-2 mRNA和Fas mRNA的表达水平。