The trophoblast (from Greek trephein: to feed; and blastos: germinator) is the outer layer of cells of the blastocyst. Trophoblasts are present four days after fertilization in humans. [1]

A useful component of current placentation and trophoblast research are a number of trophoblast cell lines that have been derived from a number of different sources including term placenta, …

Trophoblast is defined as the outer layer of the blastocyst that contributes to forming the fetal portion of the placenta, consisting of three components: cytotrophoblast, syncytiotrophoblast, and intermediate …

Feb 12, 2024 · By analyzing dynamic changes in transcriptome and enhancer profile during human trophoblast stem cell to extravillous trophoblast differentiation, we define stage-specific regulators, …

trophoblast: The membrane of cells that forms the wall of a blastocyst during early pregnancy, and also provides nutrients to the embryo and later develops into part of the placenta.

The initial layer of trophoblast cells, known as the trophectoderm, is contiguous with the embryonic ectoderm. As pregnancy progresses, trophoblasts undergo rapid proliferation and differentiation, …

The trophoblast During implantation the trophoblast differentiates itself into two layers: the syncytiotrophoblast (ST) the cytotrophoblast (CT) The syncytiotrophoblast forms an external layer …

The trophoblast plays an important role later in the development of the placenta or afterbirth. The conceptus makes contact with the uterine lining about the fifth or sixth day after conception.…

Dec 15, 2025 · After a continuous process of cleavage and compaction, the morula gives rise to the trophoblast and embryoblast, which are the primary components of the blastocyst.

Feb 12, 2024 · Here the authors report stage-specific transcriptional regulators and their sequential roles in guiding proper trophoblast differentiation.