目的调查献血者人群中H抗原缺失血型的表型频率，研究其血清学和遗传学特征。
Objective Survey the frequency of H deficient phenotype in blood donor population and analyze the serological and genetic characteristics of these individuals.
方法选择ldh患者717例，采用血型群体遗传学及血型血清学方法，进行ABO血型表现型及基因频率分布等调查分析。
Methods Using serological way, 717 patients with LDH were investigated on the phenotype and the genetic frequency distribution of ABO blood type.
方法选择鲁中南地区先天性心脏病患者444例，采用血型群体遗传学及血型血清学方法，进行ABO血型表现型及基因频率分布调查统计。
Methods ABO phenotype and its genetic distribution were investigated in 444 patients with congenital heart disease in center of south region of shandong via blood type genetics and serology.
方法选择鲁中南地区先天性心脏病患者444例，采用血型群体遗传学及血型血清学方法，进行ABO血型表现型及基因频率分布调查统计。
Methods ABO phenotype and its genetic distribution were investigated in 444 patients with congenital heart disease in center of south region of shandong via blood type genetics and serology.
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