Chemicals were then used to coax these stem cells into becoming four types of cell found in the earliest stages of the human embryo: epiblast cells, which become the embryo proper (or foetus ...

The synthetic embryos - only days or weeks old - could help researchers study the earliest stages of human development and explain pregnancy loss. Nobody is currently suggesting growing them into ...

However, Thomson's use of spare human embryos provided by the University ... and the resulting blastocyst-stage embryo then disaggregated to produce a histocompatible pluripotent stem cell line.

Researchers have uncovered how egg cells prepare for the creation of life. Their work reveals the secrets of the Balbiani ...

For most of recorded history, people have fundamentally disagreed about the moral status of the human embryo ... At this stage of pregnancy, it was natural to think of the embryo as a being ...

The fusion of sperm and egg gametes during human fertilization establishes a diploid zygote and initiates a series of cell divisions that result in a multicellular embryo. The blastocyst stage is ...