Scooping the guts out of bacteria and refilling the exoskeletons with an expansive fluid reveals if whether a microbe is structurally strong or weak.

New research may explain why rotavirus causes severe, life-threatening disease in some people and only mild disease in others.

A strain of human gut bacteria can turn a chemical in processed food into harmless byproducts, research with mice shows.

Evidence from the back end of a Bengal cat suggests their stinky way of marking territory gets its start with bacteria.

New findings about gut bacteria in mice may be a step toward helping humans to better tolerate antibiotic treatment.

Azteca ants are great at suppressing potentially harmful microbes in their brood chambers—the equivalent of our daycare centers.

"We're no longer saying, ‘Let's just start them on antibiotics because it's better to be safe than sorry.' Now we know there's a risk..."

Antibiotics may reduce the effectiveness of the flu vaccine, research finds. Why? Your gut bacteria.

A new nanoparticle beats FDA-approved medications for relieving symptoms of inflammatory bowel disease in mice.

Inspiration from the bacteria that causes Legionnaires' disease could lead to antibiotics that spare good bacteria and skip the side effects.