Cook P J
Postgrad Med J. 1974 Jun;50(584):362-4. doi: 10.1136/pgmj.50.584.362.
α-Antitrypsin can be shown to be polymorphic by starch gel electrophoresis. At present 19 different alleles are known which are inherited in an autosomal pattern and constitute the Pi system. In one phenotype called Pi type ZZ there is a virtual deficiency of plasma α-antitrypsin and about 230 such babies are expected in England and Wales every year.
通过淀粉凝胶电泳可显示α-抗胰蛋白酶具有多态性。目前已知有19种不同的等位基因,它们以常染色体模式遗传,构成了Pi系统。在一种名为Pi ZZ型的表型中,血浆α-抗胰蛋白酶实际上存在缺乏,在英格兰和威尔士每年预计约有230名这样的婴儿。