Bacteria coordinate a pilus's movement based on touch.
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When Pseudomonas aeruginosa’s thread-like pilus touches down on a surface, it activates PilT, a motor that retracts the pilus and moves the cell. Unattached pili rarely retract, indicating that surface contact provides a signal for its motors to move. But the mechanism that activates the motor is still unknown.
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Diana is a freelance science journalist who covers the life sciences, health, and academic life. She’s a regular contributor to The Scientist and her work has appeared in several other publications, including Scientific American, Knowable, and Quanta. Diana was a former intern at The Scientist and she holds a master’s degree in neuroscience from McGill University. She’s currently based in Berlin, Germany.
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The liquid world of fetal development provides a rich source of nutrition and protection tailored to meet the needs of the growing fetus.
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