Apr 13 - By Jim Vertuno, Associated Press
The Texas Medical Board on Friday approved new rules on experimental stem cell therapies such as the one Gov. Rick Perry underwent during back surgery last year, despite objections they don't do enough to protect patients and could led to an explosion of doctors promoting unproven, expensive treatments.
Mar 18 - By Alicia Chang, AP Science Writer
The creation of California's stem cell agency in 2004 was greeted by scientists and patients as a turning point in a field mired in debates about the destruction of embryos and hampered by federal research restrictions.
Mar 14 - By Matthew Perrone, AP Health Writer
The Food and Drug Administration has received a complaint against a company that stored adult stem cells from Texas Governor Rick Perry for use in an experimental procedure to treat his back pain.

Feb 29 - By msnbc.com
Jan 10 - By Associated Press
The Health Ministry ordered unapproved stem cell treatments stopped Tuesday as China tries to bring under control its growing but loosely regulated industry.
Nov 4 - By Will Weissert, STF
The Texas State Medical Board voted Friday to delay until next year final approval of new stem cell therapy rules that could restrict — or even block — procedures such as the one Gov. Rick Perry recently underwent on his aching back.
Oct 18 - By Maria Cheng, Associated Press
The European Union's top court ruled Tuesday that scientists cannot patent stem cell techniques that use human embryos for research, a decision some scientists said could threaten major medical advances if it prevents biotech companies from turning a profit.
Oct 13 - By Ken Ritter, Associated Press
A prominent Las Vegas-area pediatrician pleaded not guilty Thursday to federal charges that he and a man who falsely claimed he was a doctor conspired to implant chronically ill patients with stem cells harvested from human placentas.
Nov 21 - By Malcolm Ritter, AP Science Writer
For only the second time, the U.S. government has approved a test in people of a treatment using embryonic stem cells — this time for a rare disease that causes serious vision loss.
Oct 12 - By Associated Press
An attempt to lighten up the heavy subject of stem cells through poetry has backfired on the California agency that manages the state's $3 billion research fund.
Oct 11 - By Damian Troise, Associated Press
Geron Corp. has begun testing an embryonic stem-cell treatment on a patient with spinal cord injuries, marking the first time such a medical therapy has been used on a human in a government approved study.
Aug 24 - By Associated Press
The White House says federally funded stem cell research should continue and is exploring how to respond to a judge's order halting it.
Aug 23 - By Pete Yost, Associated Press
The Obama administration's expansion of stem cell research has suffered a significant setback with a judge's ruling that blocks important work on treating life-threatening conditions, say private groups pushing for scientific breakthroughs in medicine.
Aug 1 - By Malcolm Ritter, AP Science Writer
Scientists are making progress in testing stem cells to treat a variety of diseases, but they're warning about clinics that push unproven treatments.
May 3 - By Scott Bauer, Associated Press
Consumer groups challenging a key patent covering embryonic stem cell research pioneered at the University of Wisconsin-Madison have won an appeal overturning an earlier rejection of their claims.
Dec 8 - By Jeff Karoub, AP Business Writer
A leading University of Michigan researcher said Tuesday the school now can accept private donations of unused human embryos for creating new stem cell lines.

Mar 11 - By Shannon McCaffrey, Associated Press
A showdown is shaping up in some of the nation's most conservative states over embryonic stem cell research, as opponents draw language and tactics from the battle over abortion to counter President Barack Obama's plan to ease research restrictions.
Dec 3 - By Malcolm Ritter, AP Science Writer
Consumers should be wary of Web sites from clinics that offer stem cell treatments, says a study that found a lack of firm medical evidence to back up their claims. The Web sites in the study generally portrayed their therapies as safe, effective and ready for routine use, but published research doesn't support that "overoptimistic" picture, the study authors said.
Oct 23 - By David Eggert, Associated Press Writer
A television ad created by opponents of a ballot measure that would allow embryonic stem-cell research in Michigan likens such work to the infamous Tuskegee syphilis study.
Oct 7 - By Associated Press
The University of Minnesota has concluded that falsified data were used in a 2001 article published by one of its researchers on adult stem cells. The school is asking that the article be retracted.
Jul 8 - By Tim Martin, Associated Press
Supporters of a ballot measure that would loosen Michigan's restrictions on embryonic stem cell research took a big step toward placing it on the November ballot.

Apr 21 - By John W. Schoen, Senior Producer

Apr 21 - By Associated Press
A new nonprofit institution plans to build a $115 million stem cell research facility in San Diego that would open by 2010.
Mar 11 - By Ryan J. Foley, Associated Press
The U.S. Patent and Trademark Office has upheld a second and a third University of Wisconsin-Madison patent covering embryonic stem cell research at the school.
Feb 28 - By Ryan J. Foley, Associated Press
A federal agency has upheld a patent that covers embryonic stem cell research, rejecting a challenge from critics who say the patents are hindering research. An examiner with the U.S. Patent and Trademark Office ruled this week that one of three patents can stand. A challenge to two other patents remains pending.