为了证明ABH血型物质的存在,利用羊膜穿刺术的方法,在妊娠的12～18周,平均约16周时采集100例羊水,进行检测。在出生后又采集了这些婴儿的唾液,并做分泌型状态的测定。在进行重复测定后,二者的结果有98％一致。2％的错误可能来源于血液 In order to demonstrate the presence of ABH blood group material, amniocentesis was used to detect 100 amniotic fluid at a mean of about 16 weeks from 12 to 18 weeks of gestation. After birth, these infants were also collected saliva, and do secretory state determination. After repeated measurements, the results of both 98% identical. 2% of the errors may come from the blood