Where Do the Extra Embryos Go?
496036
Every year, in vitro fertilization clinics produce more embryos than they use in helping women get pregnant. A new study shows a wide discrepancy in what happens to the extras, from incineration to freezing. By Kristen Philipkoski.
542886
Researchers at the University of Pennsylvania School of Veterinary Medicine have identified the growth factors essential to allow spermatogonial stem cells -- the continually self-renewing cells that produce sperm -- to exist in culture indefinitely.
150267
British scientists have created human embryos with three parents in a development they hope could lead to effective treatments for a range of serious hereditary diseases within five years.
624903
With fertility drugs, Angela Magdaleno had triplets three years ago. Last week, she had quadruplets &amp;#151; without fertility drugs.
349180
British scientists who have created human embryos containing the DNA of not two, but three, people deny they are doing any gene altering. The point is to identify potential health risks and remove them, they say.
400307
The prospect of women routinely freezing unfertilised eggs for IVF has moved a step closer after research. Thirteen children were born after 68 couples underwent treatment by Italian doctors who froze unfertilised eggs.
484514
A new study shows that embryonic stem cells can heal defective heart cells in mice. It could be a new way to look at the potential healing power of these controversial cells. By Kristen Philipkoski.
395239
Scientists create a human embryo with three separate parents, raising hopes of new treatment for genetic disease.
672151
U.S. scientists announce that they have cloned human embryos  -  to little fanfare. They weren't the first, though, and they won't be the last.
37968
THERE ARE three myths in the politically charged controversy over stem cell research. One myth is that all stem cell research involves only embryonic stem cell research.
530208
By putting off a vote on banning all human cloning, nations have let embryo research for therapeutic reasons gain momentum. By Gregory M. Lamb | Staff writer of The Christian Science Monitor.
313676
A growing number of couples are screening embryos to detect a predisposition to cancers that may or may not develop later in life.
220388
MONDAY, Nov. 8 (HealthDayNews) -- Surgery to transplant a woman's entire ovary to her upper arm is feasible and can preserve fertility in patients undergoing radiation treatments that leave them prematurely menopausal, a new report says.
160271
Plus: Geneticist creates new life forms, legal problems. Read what people are saying on News.com Extra.
688498
NEW YORK  - Contrary to conventional wisdom, the appendix may not be useless after all. New research suggests that the structure helps beneficial bacteria survive and repopulate the colon after these organisms become depleted as a result of an infection or drug treatment.
247635
Why didn&#39;t Bush outright prohibit the research, if he truly believed destroying embryos is killing? BY RAMESH PONNURU. Ramesh Ponnuru is a senior editor at the National Review.
471659
PHILADELPHIA _ When the subject is stem cell research, the term embryo is not only ethically charged, but increasingly hard to define.  Now, University of Pennsylvania researchers have stretched the definition even further.