Bacteria and viruses are often lumped together as germs, and they share many characteristics. They’re invisible to the human eye. They’re everywhere. And both can make us sick. Bacteria and viruses ...

Bacteria belong to the monera kingdom, alongside plants, animals, fungi, and protists, and are therefore considered living creatures. Viruses, on the other hand, are closer to collections of molecules ...

Penn State scientists uncovered an ancient bacterial defense where dormant viral DNA helps bacteria fight new viral threats. The enzyme PinQ flips bacterial genes to create protective proteins that ...

It is common knowledge that the human gut is home to hordes of bacteria, most of which seem essential for good health. But there is another component of the gut microbiome that receives less attention ...