Human angiostatin k(1-3) cDNA has been obtained by RT-PCR from total RNA of an abortive foetus of six months.

• 用6月龄大月份流产的新鲜肝脏组织为材料；提取总RNA；通过反转录得到cDNA；并以此为模板；经PCR得到人Angiostatin基因的AK(1-3)片段.