Tiny, robotic fish powered by human heart cells suggest that scientists are getting closer to their goal of building replacement hearts from living tissue.
Researchers hope large numbers of very primitive, embryo-like structures will lead to new insights into early human development and ways to prevent miscarriages and birth defects.
A Japanese research team made immature human eggs from stem cells that were derived from human blood. The technique brings scientists a step closer to being able to mass-produce human eggs.
California alone has spent billions in state funds over the last 14 years to support stem cell research. Scientists want another round of cash. So, what exactly did voters get for their money so far?
The companies are "unscrupulous actors" marketing stem-cell treatments that have not been proved effective and may be dangerous, the FDA says. It took action against clinics in Florida and California.
This device shoots new genetic code into cells to make them change their purpose. Researchers say the chip could someday be used to treat injuries in humans. But they've got a long, long way to go.
In 2003, researchers declared a moratorium on the use of transplanted brain cells to treat Parkinson's disease. Now, armed with better cells, they're giving the approach another try.