Blastocyst: A stage of embryonic development that occurs approximately five days after fertilization, characterized by a hollow structure that is ready for implantation into the uterine wall.

(4) Post-Implantation Embryo Models: Scientists differentiated PSCs (naïve or primed stage) into lineages representing the primitive ... lead to the formation of the primitive endoderm, which forms a ...

Further cell divisions lead to the formation of the primitive endoderm, which forms a blastocyst. This structure implants ... study gene expression and the role of cell density in embryo development. ...

At the earliest stages of life, the blastocyst ... begins to form. Its development is tightly controlled by genetic and epigenetic programs. Stem cell-based embryo models, such as blastoids ...

This mechanism to temporarily slow development, called embryonic diapause, often happens at the blastocyst stage, just before ...

blastocyst culture, and/or cryoconservation), namely, a very early, complete division/duplication of the embryo, so that monozygotic twins each have their own placenta and their own membranous ...