Furthermore, the high lipid content in the embryo has been linked to ... stage embryos allowed subsequent development to the morula/blastocyst stage in culture. The 41.3% blastocyst development ...

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 ...

During early development the precursors to all these ... and the resulting blastocyst-stage embryo then disaggregated to produce a histocompatible pluripotent stem cell line.

Unlike mammals, birds lay eggs and initial stages of development occur outside the mother’s body ... Breakdown of uterine tissue next to the blastocyst produces nutritive substances for the embryo ...

The genetic machinery needed to modify the DNA is injected into the embryo The blueprint for ... fewer than 50 reach the blastocyst stage, 25 implant into the womb and only 13 develop beyond ...