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Innovation

Levitating Cells with Ultrasonic Tweezers Provides a Sound Route to Bio-Engineering

Pioneering ‘tweezers’ that use ultrasound beams to grip and manipulate tiny clusters of cells under electronic, push-button control could lead to life-changing medical advances, such as better cartilage implants that reduce the need for knee replacement operations.
Using the crafted sound fields, cartilage cells taken from a patient’s knee can be levitated for weeks in a nutrient-rich fluid. This means the nutrients can reach every part of the culture’s surface and, combined with the

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