Then they made small changes to the bacterium's deoxyribonucleic acid -- DNA for short.

VOA: special.2010.07.20

Another example of scientific progress involves a natural bacterium known as Bt.

VOA: special.2009.10.27

Bt is a bacterium that was discovered in the early twentieth century.

VOA: special.2010.05.25

The letters of this code tell what qualities the bacterium contains.

VOA: special.2010.07.20

They also identified the bacterium that causes Buruli ulcer.

VOA: special.2009.04.06