Contact: Evan Lerner
University of Pennsylvania
Caption: Researchers at the University of Pennsylvania, Brown University and ETH Zurich have used a series of experiments to develop a dynamic model of the stresses that stretch growing tissue. This model is the first to take into account the complicated feedback effects of cells' molecular motors, which can respond to external stress by pulling harder on their environment, eventually tearing the tissue apart. In this experiment, the researchers grew tissue suspended between two flexible posts. Measuring the movement of the posts allowed them to determine how hard the tissue's cells were pulling.
Credit: University of Pennsylvania
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