Methods 40 JMG patients from South China were analyzed and HLA-DQA1 alleles were determined using PCR-RFLP genotype method,compared with that of health controlled group.

• 方法采用PCR-RFLP方法，对40例少年型重症肌无力患儿的HLA-DQA1基因进行分型，并与健康对照组进行比较。