Sentences with phrase «trophoblast cells»
Trophoblast cells are a type of cells found in the outer layer of an embryo. They play a crucial role in the early stages of pregnancy by forming the placenta, which provides nutrients and oxygen to the developing baby. These cells help establish a connection between the embryo and the mother's uterus, allowing the baby to grow and develop inside the womb. Full definition
In the current study, the researchers noted that GRHL2 is very active in the healthy placenta, especially in trophoblast cells, which are responsible for the development of the labyrinth.
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Epidermal growth factor stimulates human trophoblast cell migration through Rho A and Rho C activation.
The NIH defines totipotent cells as the source of both embryonic stem cells and of trophoblast cells which give rise to extra-embryonic tissues such as the placenta.
Dr. Coyne's team took a different approach: They cultured a human placental trophoblast cell line in a microgravity bioreactor system developed by NASA.
Chrousos's group looked for CRH in human trophoblast cells, special cells that help form the placenta, in petri dishes.
The blastocyst contains both embryonic stem cells and trophoblast cells.
Thus the only difference between totipotent and pluripotent cells is that totipotent cells divide and differentiate into both embryonic stem cells and trophoblast cells.
Because a pluripotent embryonic stem cell can not differentiate into a trophoblast cell, the blastocyst must have differentiated into these two cell types from a totipotent cell (the zygote).
The hCG (human chorionic gonadotropin) hormone is a remarkable molecule, which is very unusual because it is produced only by the cells that will become the placenta of the developing embryo (trophoblast cells).
In particular, the branching of the trophoblast cells and the migration of the fetal blood vessels into the placenta were impaired.
The trophoblast cells branch out to form the labyrinth, and they are accompanied by fetal blood vessels.
When the embryo is at the 16 - cell stage (called a morula), it is a solid sphere of cells and already the precursors of the trophoblast cells are defined; the external, relatively larger cells mostly become the trophoblast cells.
When the embryo was a morula, the surrounding trophoblast precursors caused fluid to be secreted into the morula (utilizing sodium pumps in the trophoblast cell membranes); this secretion created the blastocoel cavity.