After the surgery, the patient developed bacteriaemia, which required immediate intravenous antibiotics.

The doctor prescribed antibiotics after diagnosing a bacterial infection in the wound.

Researchers compared the bacterial floras from different coastal sites to understand how pollution affects microbial diversity.

Scientists diagnosed the oak with bacterial wetwood after observing the dark, foul-smelling ooze seeping from its trunk.

The bacterian colonies on the slide revealed patterns that later scientists would classify under modern bacterial taxonomy.