Extraembryonic mesoderm migrates through primitive streak to the presumptive yolk sac between days 6.5 and 7.0 of gestation.
胚外中胚层在妊娠的第6.5至7.0天之间通过原始条带迁移到推测的卵黄囊。
Tetraploid cells are preferentially allocated to the extraembryonic tissues, such as placenta, rather than the fetus itself.
而在胎儿本身的组织中，很少能找到四倍体细胞的存在。
Ultrasonography had great advantage over MRI in showing yolk sacs, amniotic sacs, extraembryonic coelom and embryocardia-beats ( P< 0.005).
MRI显示早早孕、早中期的卵黄囊、胚外体腔、羊膜囊及胎心搏动不如超声（P<0 .0 0 5 ） ；
Totipotent - having unlimited capability. Totipotent cells have the capacity to specialize into extraembryonic membranes and tissues, the embryo, and all postembryonic tissues and organs.
全能—具有无限能力。全能细胞具有分化为特定的胚胎外膜和组织、胚胎以及所有胚胎后组织和器官的能力。
Totipotent - having unlimited capability. Totipotent cells have the capacity to specialize into extraembryonic membranes and tissues, the embryo, and all postembryonic tissues and organs.
全能？具有无限能力。全能细胞具有分化为特定的胚胎外膜和组织、胚胎以及所有胚胎后组织和器官的能力。
The hematopoietic and vascular systems of the mouse arise from extraembryonic mesoderm that migrate through primitive streak to the presumptive yolk sac between days 6.5 and 7.0 of gestation.
小鼠的造血和血管系统起源于胚外中胚层。胚胎期6.5-7天时在卵黄囊形成特征性的血岛结构发生向造血和内皮细胞的分化。
The hematopoietic and vascular systems of the mouse arise from extraembryonic mesoderm that migrate through primitive streak to the presumptive yolk sac between days 6.5 and 7.0 of gestation.
小鼠的造血和血管系统起源于胚外中胚层。胚胎期6.5-7天时在卵黄囊形成特征性的血岛结构发生向造血和内皮细胞的分化。
应用推荐