方法运用序列特异性引物聚合酶链反应技术，检测无亲缘关系湖北汉族健康人136例、食管癌组42例患者的HLA-DQB1等位基因。
METHODS HLA-DQB1 gene polymorphisms were typed by sequence specific primer based polymerase chain reaction, in 42 patients with esophageal neoplasm and 136 normal control subjects.
并把分型结果与采用聚合酶链反应-序列特异性引物（PCR-SSP）获得的结果进行比较。
The results of genotyping were compared with those obtained with the polymerase chain reaction method using sequence specific primers ( PCR-SSP).
分别设计MSX1、PAX9基因特异性引物，聚合酶链反应扩增全部外显子编码区和内含子-外显子剪接序列，产物纯化后直接测序。
Specific primers were designed for MSX1 and PAX9 respectively. Mutation analysis was performed by direct sequencing of all the coding exons and intron-exon boundaries.
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