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

The test, also known as MRI, involves studying the magnetic signals from all the cells in the body.

VOA: special.2009.01.06

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

VOA: special.2009.04.07

But she was not told that a doctor had taken cells from her body for testing.

VOA: special.2010.07.21

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

VOA: special.2009.01.06

Henrietta Lacks did not give her permission for the cells to be taken from her tumor.

VOA: special.2010.07.21

She helped the family understand the importance of the HeLa cells and accept that the scientific community has gained so much from their use.

VOA: special.2010.07.21

Human genes are normally organized along forty-six chromosomes in our cells, twenty-three from each parent.

VOA: special.2009.09.09

Scientists say aspirin prevents blood cells called platelets from sticking together to form clots.

VOA: special.2009.10.20

Cancer cells from a patient at the university's hospital were more than just surviving.

VOA: special.2010.07.21

At this point,you may be wondering just where these famous HeLa cells came from.

VOA: special.2010.07.21

And the question remains whether her family had a legal or moral right to receive payment after something of monetary value was made from their mother's cells.

VOA: special.2010.07.21

The cells were taken from the cervix of a woman named Henrietta Lacks.

VOA: special.2010.07.21

Rebecca Skloot says she hopes that scientific companies that have gained from HeLa cells will give back to the family whose ancestor changed the history of medicine.

VOA: special.2010.07.21