The genotype frequencies for Pro/Ala,Pro/Pro were 10% and 90%,respectively,in the DM group,and 5%,95% in the control subjects.

• IDDM患者基因型Pro/Ala、Pro/Pro频率分别为10%25、90%25；x2=3.；39；P>0 05；而对照组Pro/Ala、Pro/Pro频率分别为5%25、95%25;