How a harmful bacterium senses iron

A bad germ called Pseudomonas aeruginosa makes people sick in hospitals. This germ is hard to kill with medicine. A team of scientists found how it works.

The germ has two small parts inside it. These parts feel iron. Iron comes from outside the germ. Iron also comes from inside the germ.

The two parts work like a switch. They change how the germ uses food. This helps the germ grow. The scientists want to stop the germ.

Sources: phys.org