Sentences with phrase «fertilize oocytes»

He was also instrumental in developing techniques for post thaw extended culture (PTEC) following fertilized oocyte cryopreservation demonstrating the importance of embryo - endometrial synchrony for implantation, for which he received another research award.

Oct4 messenger RNA is present in fertilized oocytes and early embryos, and expression is maintained until mid-gastrulation at which point it disappears, with the exception of primordial germ cells and their progeny [11], [12].

Not exact matches

Their technique, which involves taking a woman's mature oocyte (egg) and fertilizing it with sperm in a petri dish to form an embryo, led to a U.K. woman's giving birth to the first «test tube baby» in 1978.

Somehow, scientists know, the genes that control development — generally turned off in adult cells — get turned back on again by the oocyte, enabling the cell to take on the youthful potential of a newly fertilized egg.

But like the medieval alchemists, today's cloning and stem cell biologists are working largely with processes they don't fully understand: What actually happens inside the oocyte to reprogram the nucleus is still a mystery, and scientists have a lot to learn before they can direct a cell's differentiation as smoothly as nature's program of development does every time fertilized egg gives rise to the multiple cell types that make up a live baby.

Human oocytes were collected by laparoscopy and fertilized and cultured in vitro.

Beginning with mouse egg cells, Daley and his team tricked these egg cells, or oocytes, into thinking they had been fertilized (a process called parthenogenesis) and managed to isolate embryonic stem cells from the subsequent early mouse embryos.

Now we can offer the generation of knock - out models though direct injection into fertilized mouse oocytes of CRISPR sgRNA and Cas9 mRNA.

Every month menstruating women ovulate, and every month the lining is shed if that oocyte was not fertilized.

These primary oocytes must undergo another meiotic division and further maturation before they become secondary oocytes and can be fertilized.