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用免疫扩散放射自显影技术,对北京地区953例妊妇血中甲胎蛋白(AFP)含量进行了测定。对其中889例进行了随访,有5个病人分别出生五对正常双胎婴儿,在妊娠期间已测出他们血中 AFP 含量均高出单胎妊娠正常值的97.5%位数以上。
Immunofluorescence autoradiography was used to detect the level of AFP in 953 pregnant women in Beijing. Eighty-nine of these patients were followed up. Five of the five patients were each born with five pairs of normal twin infants. AFP levels in their blood during pregnancy were higher than 97.5% of normal singleton pregnancies.