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The development of colonies of cells in choanoflagellates, water-dwelling organisms that feed on bacteria, is triggered by the presence of very low concentrations of a lipid molecule produced by certain types of bacteria.

A pattern recognition receptor called toll-like receptor 13 detects pathogens in a manner that is different to that seen in other pathogen sensors.

Virtual reality experiments show that motorists slow down when driving in fog, but they speed up when visibility is reduced equally at all distances.

Histones bound to lipid droplets inside cells offer protection against bacteria in flies, and possibly mice, thus suggesting a possible new innate immunity pathway.

The transcription machinery used to regulate gene expression and self-renewal in human embryonic stem cells is different from that found in other cells.

Following a career in science involves long hours and hard work, but as Eve Marder explains in the first of a series of columns, it can also be extremely rewarding.

With a commitment to open access and innovation in peer review, eLife aims to publish important results in the life and biomedical sciences in a flexible digital format that allows authors to present their work in full, including the key data on which the conclusions are based.