The technology increases yield by harvesting the vaccine which is normally discarded after becoming attached to debris in the allantoic fluid of the chick embryo.

• （疫苗生产过程中）通常会弃去污染细胞碎片的鸡胚尿囊液，而采用该技术就可以从这种含细胞碎片的鸡胚尿囊液中提取疫苗而增加产量。