Additional file 8: of Germline and somatic variations influence the somatic mutational signatures of esophageal squamous cell carcinomas in a Chinese population
Figure S3. Population stratification of 302 ESCC patients. Two hundred eight genotyped reference individuals are obtained from TGP including 103 CHB and 105 CHS. After filtering 20 outliers, the remaining 282 samples are classified into CHB and CHS at a threshold level of 0 for PC2. (PDF 165 kb