方法 应用聚合酶链式反应—单链构象多态性分析 (PCR SSCP)技术进行检测。结果 在早期胃癌组织中检出突变率为 2 0 .0 %( 1/5 ) ,在进展期胃癌组织中的突变率为 2 1.9%( 7/32 )。实验结果表明 ,p2 7基因在早期胃癌与进展期胃癌中均有较高突变频率 ,两者差异无显著性 ;p2 7基因突变在胃癌中与性别、...
PURPOSE: A composition for hot-start PCR is provided to prevent DNA band smearing by primer-dimer formation or non-specific reaction.;CONSTITUTION: A composition for hot-start PCR contains a blocking oligonucleotide which is complementary to a primer and has blocked hydroxyl group at 3' end. The...