Bacteria grow and divide in microfluidic channels.

The Tufts University biologist and physician sounded the alarm on the effects of antibiotic use in animals.

Oxytetracycline, approved by the US government to combat citrus scourge, may not work—at least not as a spray.

In Niger, fewer kids die when health workers administer azithromycin routinely, perhaps because of a shift in the composition of gut microbes.

Research in mice and humans is beginning to establish a link between the composition of microbes in the gut and immune responses to tumor cells, but the mechanisms are not yet clear.

A membrane pump found in most bacteria helps E. coli acquire drug resistance from neighboring cells even while they’re exposed to antibiotics, a new study shows.

Delivery guidelines should be updated to reflect these results, the authors write.

Governor Phil Murphy signs a bill honoring the bacterium discovered in his state’s soil, now known for its antibiotic compounds used to treat tuberculosis.

The former Columbia University professor’s early work helped illuminate the structure of penicillin, allowing chemists to make variants and broaden the scope of antibiotic treatments.