Among these 10 cases of CJD patients, 8 cases are codon 129 homozygous Met/Met and 2 cases are heterozygous Met/Val. No codon129 homozygous Val/Val was found.

• 10例CJD中 8例为12 9密码子甲硫氨酸纯合子型 ,2例 12 9密码子甲硫氨酸和缬氨酸杂合型 ,无 12 9密码子缬氨酸纯合子型。