Experiments on cells in the lab can require growing them in a more life-like 3D configuration, such as on 'scaffolds', rather than as a monolayer on the bottom of a Petri dish. Now, this study shows that subjecting sensory neurons and glial cells to sound-driven hydrodynamic forces in their growth medium causes them to assemble, organise and interact as in a dorsal root ganglion with functional fidelity without the need for scaffolds
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