Doctor Ruhli says researchers used this method to study changes in the tuberculosis bacteria from two thousand year-old mummified tissue.

VOA: special.2010.06.29

A protective coating of colloidal silver is painted on the inside and outside of the filter to kill bacteria.

VOA: special.2009.06.22

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

Untreated patients can spread the bacteria from their nose and mouth through the air to people who are near them a lot.

VOA: special.2009.10.14

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

Makers of the devices say they kill bacteria and viruses because they help to remove the wetness that germs need to survive.

VOA: special.2009.07.14

One of the showerheads was cleaned with a bleach solution in an effort to destroy the bacteria.

VOA: special.2009.10.13

Tests showed that instead of killing the bacteria, the bleach actually caused the bacteria levels to increase.

VOA: special.2009.10.13

The studies also appear to show that environmental causes such as viruses or bacteria may be involved.

VOA: special.2009.01.06

The tissue may contain evidence of the virus or bacteria that caused the person to die.

VOA: special.2010.06.29

Scientists have found a new species of blind lobster and giant bacteria, to name a few.

VOA: special.2009.01.13

They found that half contained Legionella bacteria, compared to fifteen percent of manual faucets.

VOA: special.2011.04.06

And,showerheads made of plastic seemed to have higher bacteria levels than metal ones.

VOA: special.2009.10.13

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

The bacteria use these minerals to survive.

VOA: special.2009.06.03

"We were looking at effect of delivery mode on the very first bacteria that the baby is exposed to."

VOA: standard.2010.06.30

Ruhli notes researchers used that technique to study the evolution of the tuberculosis bacteria from 2,000-year-old mummified tissue to modern-day strains.

VOA: standard.2010.05.05

To do that, Costello's co-lead researcher took samples of bacteria from mothers and babies immediately before and after birth.

VOA: standard.2010.06.30

and with it, the virus or bacteria that may have caused the person to die.

VOA: standard.2010.05.05

It keeps them healthy and helps them grow better. Public health groups have opposed the practice because bacteria continually exposed to antibiotics will eventually develop resistance to them.

VOA: standard.2010.07.21

Exactly how the differences in bacteria might make vaginally born babies less prone to allergies and asthma isn't yet clear, but it does point to a difference that researchers can look at going forward.

VOA: standard.2010.06.30