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

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

Mister Cooper says the substances build up in the cells of plants, animals and human beings.

VOA: special.2009.06.23

"It reacts with that region, it inactivates the virus and the virus never has a chance to enter the cells that it would otherwise infect."

VOA: special.2010.07.14

They found that a small amount of aspirin suppressed the way the cells form tubes.

VOA: special.2009.10.20

He began giving the cells to researchers across the country, free of charge.

VOA: special.2010.07.21

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

VOA: special.2010.07.21

The cells slowly lose their ability to produce a chemical called dopamine.

VOA: special.2009.04.07

And how the cells shutdown is they actually die Harris Perlman says a protein in healthy immune cells causes them to die after they attack an invading virus or bacteria.

VOA: special.2010.03.16

This means the cells can keep growing and reproducing indefinitely.

VOA: special.2010.07.21

The cells created electricity by mixing hydrogen with oxygen.

VOA: special.2009.06.24

As they do this, they destroy the cells.

VOA: special.2010.04.20

But the cells always died quickly.

VOA: special.2010.07.21

The researchers say the bacteria were grouped together in a thin, but sticky area of cells on the inside of showerheads.

VOA: special.2009.10.13