如何使用 "allantois" 造句

1. Blood-borne seeding by hematopoietic and endothelial precursors from the allantois .
用来自尿囊的造血和内皮前体细胞进行血液播种。
2. Relating to or characterized by an allantois .
由尿囊特性的或与之相关的。
3. Results the pgcs in mouse allantois , hindgut , dorsal mesentery and genital ridge were nanog positive .
结果尿囊、后肠及背肠系膜、生殖嵴的原始生殖细胞中均可见nanog的阳性表达。