图2. 遗传性铁粒幼细胞贫血患者及其母亲ALAS2基因测序结果.
A：患者ALAS2基因第4外显子c.329-332delTCAG（p.V110Afs*2），为半合子；B：患者母亲ALAS2基因第4外显子c.329-332delTCAG（p.V110Afs*2），为杂合子
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