Sequencing of the PCR product showed three point mutations in SU DHL 1, which were GAC to AAC in codon 72, GOT to ACT in codon 77, and a insertion of C between codon 82 and 83, respectively.

• 测序分析发现 SU- DHL- 1P16基因第二外显子有 3处点突变 ,即密码子72的 GAC突变为 AAC,密码子 77的 GCT突变为 ACT,密码子 82与 83之间插入了一个 C。