Figure 1From: Identification of exon 19 and 21 mutations of EGFR gene in Chinese patients with esophageal squamous cell carcinomaRepresentative result of denaturing high performance liquid chromatography and sequencing for EGFR L858R mutations. (A) L858R missense mutations in exon 21 were found using the denaturing high performance liquid chromatography-based method. A single peak on the left (123 bp) indicates mutant alleles, and that on the right indicates wild-type alleles at about 138 bp. (B) No mutations were detected under sequencing conditions.Back to article page