Membrane vesicles (also known as extracellular vesicles) are produced by all kinds of organisms. They are small lipid bags that come off a donor cell and get internalized by a recipient cell. Their role is to carry biological information and they are described as key intercellular communication players. However, their role in the microbial world is still very much unknown. Researchers from the Institut Pasteur and Arizona State University examined membrane vesicle movements in bacterial populations.

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