Sentences with phrase «frozen egg cells»

Not exact matches

This maneuver «froze» the cells in a quiescent phase of their division cycle and may have made their chromosomes more susceptible to being reprogrammed to initiate the growth of a new organism after the nuclei were transferred into an egg.

As a radical alternative, biologist Jeanne Loring at the Scripps Research Institute is attempting to transform frozen skin cells from threatened species into eggs and sperm.

With more - than -30-year-old frozen tissues from a preserved frog, the team extracted and implanted the nucleus of a dead cell into a fresh host egg from a distantly related species.

«Maybe at the one - cell or two - cell stage,» Eggan and his colleagues reasoned, «there's still some of that stuff in there...» And if they picked the right moment of cell division, when these powerful reprogramming factors were still floating around in the periphery of the cell, they might be able to use drugs to temporarily freeze the cell in the middle of division, stick in the needle of a micromanipulator to suck out the embryonic DNA, squirt in DNA from an adult animal, and then kick - start the process of reprogramming — hours, perhaps even days after an egg had been fertilized.

Because fertilized human embryos are far more accessible than unfertilized eggs, which can not be frozen and stored, extending the result to humans could lower the practical barriers against creating human embryonic stem cells to study and potentially treat disease.

The procedure went smoothly, and the cells were eventually added to the Frozen Zoo, the menagerie of cells, eggs, sperms, and embryos of about 1,000 species and subspecies, hosted at the San Diego Zoo.