Mutated

These bacteria have mutated into forms that are resistant to certain drugs.

The mutated virus spreads easily.

The increase in cases in Saudi Arabia that began last week has raised worries among health experts that the virus has mutated into a more spreadable form, which would be a danger sign.

Karl was mutated by the alien substance.

The pig was a genetically mutated animal.

Flavio mutated.

But a U.S. government panel on biosecurity, concerned that the mutated virus could fall into the hands of bioterrorists, asked two leading scientific magazines — Science and the British journal Nature — not to publish sensitive details of the work.