a HLA-DRB1*0901PCR gel electrophoresis. 2: HLA-DRB1*0901 positive control; 1,4,5,6,8,9,10,11,12: HLA-DRB1*0901 negative samples; 3, 7: HLA-DRB1*0901-positive samples; 13: negative control; 14: blank control; b HLA-DQB1*0301PCR gel electrophoresis. 14: HLA-DQB1*0301 positive control; 3,4,5,7, 8,9: HLA-DRB1*0301 negative samples; 2,6,11,12,13: HLA-DRB1*0301 positive samples; 1: negative control; 15: blank control; c HLA-DRB1*1501 PCR electrophoresis Fig. 15: HLA-DRB1*1501 positive control; 1-10: HLA-DRB1*1501 negative samples; 11,12,13: HLA-DRB1*1501 positive samples; 14: negative control; 16: blank control; d HLA-DQB1*0602PCR gel electrophoresis. 14: HLA-DQB1*0602 positive control; 2,4,5,6,7,9,11: HLA-DRB1*0602 negative samples; 3,8,10,12: HLA-DRB1*0602 positive samples; 1: negative control; 15: blank control; M: DNA Marker; 501-bp pUC19 DNA/MspI