They may contain genes that encode toxins, coagulate blood, or, as in this case, allow the bacteria to resist antibiotics.

In this case, it would grant the new microorganism the potential to resist certain antibiotics.

In the 1980s and 1990s, many of these agents were genetically altered to resist heat, cold, and antibiotics.

That trend, some researchers say, has led to the emergence of more aggressive bacteria that can resist traditional antibiotics.

Doctors generally rely on fluoroquinolones to treat bacterial infections when they do not know if the germs will resist other antibiotics.

The resistance works in the other direction as well - germs that resist antibiotics can probably survive many disinfectants.

Scientists have become increasingly concerned about the proliferation of bacteria that resist antibiotics.

The drugs have the effect, say scientists, of producing bacteria that resist antibiotics.

Certain strains of salmonella in ground turkey resist antibiotics.

Here was a pathogen that had been shaped to resist antibiotics.