Sentences with phrase «viable embryos from»

Not exact matches

Human parthenogenetic embryos are not viable — they run into developmental snags and can not give rise to a person — but the stem cells derived from these embryos could still have research or therapeutic value.

Today, biologists from Oregon report in Nature that they have had unprecedented successes using that gene - editing technology to alter early - stage, viable human embryos.

This is because of the obvious concerns about the heritability of the genetic alterations induced, and the way in which such research could spread from work on «non-viable» embryos, to work on viable ones once this type of research had been accepted in principle by international regulatory bodies.»

They've certainly been successful in making their voices heard in recent years — for example, over the question of what to do with the 400,000 frozen human embryos left over from in vitro fertilization with no viable future.

Six years ago, President Bush limited federally funded research to about 20 viable lines of cells that had been extracted from embryos prior to August 9, 2001.

If the cells can be fertilized and develop into viable embryos, and if human ES cells turn out to have similar powers, such cells could allow researchers to get around some of the expense and ethical questions that arise from using donated eggs for therapeutic cloning experiments.

Thus far, the Newcastle team has worked with abnormally fertilized human eggs that will not develop into viable embryos; the new money will allow them to use normal, leftover eggs from IVF therapy.

Another Chinese team, from Guangzhou Medical University, in March became the first to report repairing disease - causing mutations in viable embryos, but some still contained a patchy mix of edited cells — a phenomenon called mosaicism.

The 13 sheep in the new study were created from 2005 to 2007, when biologist Keith Campbell, a key member of the Dolly team, was trying to improve cloning — creating more viable embryos to implant in the wombs of surrogate mothers, more pregnancies, and more live offspring.