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α基因缺陷的种类α地中海贫血(以下称α-地贫)以静止型、标准型、HbH病及Hb Bart’s胎儿水肿综合症四种表现型存在,其基因缺陷为α基因缺失及α基因非缺失两种。α基因缺失性缺陷α地贫染色体的α基因缺失或为αthal2
Alpha-thalassemia (hereinafter referred to as alpha-thalassemia) is present in four phenotypes of resting type, standard type, HbH disease and Hb Bart’s Fetal Edema Syndrome. The gene defect is the deletion of the alpha gene and the absence of the alpha gene Two kinds. Alpha gene deletion defect alpha thalassemia chromosome alpha gene deletion or alphathal2