Most of dual gene mutations were thalassemia major but also observed in a few of thalassemia minor cases .

β 地贫基因突变以点突变为主，双重基因突变子多为重型β地贫，亦见于少数 轻型 β地贫。

Determination and application of the cutoff value of mean corpuscular volume in thalassemia minor and silent gene carrier

轻型 地中海 贫血和静止 型基因携带者平均红细胞体积截断值及应用

In 30 cases of thalassemia minor there were 28 cases of gene mutation heterozygotes 2 cases of which were dual gene mutations and 5 cases of thalassemia major were all dual gene mutations .

30例 轻型 β 地贫中，28例为基因突变杂合子，2例是双重基因突变子；5例重型β地贫中，均为基因双重突变子。

The liver biopsy in a β - thalassemia minor case manifested jaundice

以黄疸为主要表现的 轻型β- 地中海 贫血1例附肝组织活检病理