| 1. | Mbl deficiency and low levels of serum mbl are strongly associated with the presence of variant mbl genes , encoding three different structural variants of the mbl polypeptide , which are caused by three point mutations , cgt52tgt , ggc54gac and gga57gaa , of mbl gene 已发现3个可引起免疫缺损的mbl结构基因点突变? ? cgt52tgt 、 ggc54gac和gga57gaa ,其编码产物氨基酸均发生改变,可导致血清mbl水平低下。 |