The director of its Vaccine Research Center,Gary Nabel, says each antibody blocks the virus from attaching to white blood cells.

VOA: special.2010.07.14

He developed what he calls a suicide molecule that acts like the protein which tells cells to self-destruct.

VOA: special.2010.03.16

He says normally a protein in healthy immune cells causes the cells to die after they attack an invading virus or bacteria.

VOA: special.2010.05.19

There was enough space in the bone for the healthy marrow to start producing new red blood cells.

VOA: special.2009.12.16

They used light-sensitive molecules to turn on and off nerve cells in the deep brain structure of mice.

VOA: special.2009.04.07

They hope that future synthetic cells can make useful bacteria for products like bio-fuels or vaccines, and to clean up polluted water.

VOA: special.2010.07.20

The deformed cells block blood vessels and cut off the flow of oxygen to tissue in the body.

VOA: special.2009.12.16

The immune system loses its ability to tell the difference between foreign materials and its own cells.

VOA: special.2010.06.15

For example,Mister Venter is working to design cells that can make it easier to capture carbon dioxide.

VOA: special.2010.07.20

Mayo Clinic experts say the enlarged cells can cause a person to become sick or restless.

VOA: special.2010.07.27

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

Cells in the airways begin to produce too much of a thick, sticky substance called mucous.

VOA: special.2009.07.28

Electric signals start in nerve cells and travel along these fibers to and from the brain.

VOA: special.2009.01.06