Common gut bacteria use protein delivery systems to interact directly with human cells, reshaping how scientists view the microbiome.

Scientists generally agree that eukaryotes, the domain of life whose cells contain nuclei and that includes almost all multicellular organisms, originated from a process involving the symbiotic union ...

In most people, these bacteria coexist peacefully and contribute to a mutually beneficial relationship, with both human and bacteria deriving important benefits from the other. In certain individuals, ...

Just like every other creature, bacteria have evolved creative ways of getting around. Sometimes this is easy, like swimming ...