In March, President Obama ended restrictions on the use of federal money for research using human embryonic stem cells.

VOA: special.2009.04.07

The research suggests that to grow, they have to be able to export the hormone into the main stem.

VOA: special.2009.10.13

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

VOA: special.2011.02.01

The expert urges Afghan farmers to tell agriculture officials immediately if they suspect stem rust in their fields.

VOA: special.2009.08.18

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

VOA: special.2010.11.02

The disease is a form of stem rust named for its discovery in Uganda ten years ago.

VOA: special.2009.08.18

Two new studies have investigated why fewer females,compared to males, study and work in the so called STEM subjects in the United States.

VOA: special.2010.04.01

The soaptree yucca plant can make its stem grow longer to keep its leaves above the sand.

VOA: special.2010.01.04

The new research shows that the buds on the side cannot export their auxin into the main stem because it is too full.

VOA: special.2009.10.13

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

VOA: special.2010.06.01

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

The common or purple foxglove produces pretty flowers along a tall leafy stem called a spike.

VOA: special.2009.08.25

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

VOA: special.2010.06.15