yolk sac
英 [jəuk sæk] 美 [jok sæk]

n.

卵黄囊；

英英释义

yolk sac

• n.
  • membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional

    同义词：vitelline sacumbilical vesiclevesicula umbilicus

  • membranous structure enclosing the yolk of eggs in birds reptiles marsupials and some fishes; circulates nutrients to the developing embryo

双语例句

用作名词(n.)

1. The yolk sac is gradually vascularized.
   卵黄囊逐渐被血管化了。
2. The dye Trypan Blue has a remarkable biphasic effect on pinocytosis by yolk sal.
   染料锥虫蓝对卵黄囊的胞饮作用具有明显的双向作用。

权威例句

Cell tracing shows the contribution of the yolk sac to adult haematopoiesis.
Development of erythroid and myeloid progenitors in the yolk sac and embryo proper of the mouse
A Yolk Sac Technique for the Routine Isolation of Brucella. Injection of Clotted Blood Specimens into Embryonatlng Eggs with Recover...
Intraembryonic, but Not Yolk Sac Hematopoietic Precursors, Isolated before Circulation, Provide Long-Term Multilineage Reconstitution
Clonal analysis of mouse development reveals a polyclonal origin for yolk sac blood islands.
Ontogeny of the Haemopoietic System: Yolk Sac Origin of In Vivo and In Vitro Colony Forming Cells in the Developing Mouse Embryo*
Identification and characterization of hematopoietic stem cells from the yolk sac of the early mouse embryo
Properties of the earliest clonogenic hemopoietic precursors to appear in the developing murine yolk sac.
HoxB4 Confers Definitive Lymphoid-Myeloid Engraftment Potential on Embryonic Stem Cell and Yolk Sac Hematopoietic Progenitors
Targeting of both mouse neuropilin-1 and neuropilin-2 genes severely impairs developmental yolk sac and embryonic angiogenesis