Scientists coax stem cells into repairing damaged hearts.
Stem cell research is yielding promising results in laboratory tests. One group of scientists injected bone marrow cells from a male mouse into a female mouse that had had a heart attack. Within one week the new cells regenerated part of the damaged muscles in the heart. A second group injected cells into rats that grew new blood vessels around the heart. Schmickle, S. Scientists coax stem cells into repairing damaged hearts.