But she says it must be shown scientifically that cord blood stem cells cause improvement, and not other reasons.

VOA: special.2011.02.01

Last year,President Obama ended restrictions on the use of federal money for studies of human embryonic stem cells.

VOA: special.2010.11.02

Doctor Kakarala says the cancer-fighting treatments known as chemotherapy do not control tumors containing cancer stem cells.

VOA: special.2010.06.01

Stem cells have the ability to grow other cells, such as heart, nerve or brain cells.

VOA: special.2010.06.15

During an infusion, stem cells enter the body through a vein leading back to the heart.

VOA: special.2011.02.01

Stem cells from very early embryos are able to grow into any tissue in the body.

VOA: special.2009.04.07

For example, some scientists hope to use stem cells to replace tissues damaged by disease.

VOA: special.2009.04.14

He heads the first-ever clinical trial of umbilical cord stem cells with cerebral palsy patients.

VOA: special.2011.02.01

For example,some scientists hope to use stem cells to replace tissues damaged by disease.

VOA: special.2010.06.15

The doctor also says researchers could be able to limit the number of cells that can form tumors if they limit the number of normal stem cells.

VOA: special.2010.06.01

The disappearance of cancer stem cells,then, is important for cancer control.

VOA: special.2010.06.01

The mixture caused the number of stem cells to decrease.

VOA: special.2010.06.01

Cancer stem cells are found inside tumors.

VOA: special.2010.06.01

In order to attract the rabbit's own stem cells to re-grow the cartilage, channels in the scaffold were filled with a growth factor protein.

VOA: standard.2010.08.11