前者表现为血红蛋白分子的珠蛋白肽链结构异常，如镰刀状贫血；

The former is categorized by globin structural abnormality, like sickle cell disease;

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前者表现为血红蛋白分子的珠蛋白肽链结构异常，如镰刀状贫血；

The former is categorized by globin structural abnormality, like sickle cell disease;

youdao