 This research paper proposes a new method of using acoustic tweezers to manipulate living cells. The authors use genetic engineering to create bacteria with gas vesicles that could be manipulated by ultrasonic waves. These bacteria were then used to trap cells in clusters and move them around in a controlled manner. This technique was tested in both in vitro and in vivo settings, demonstrating its potential utility in medical applications such as cancer treatment. This article was authored by Yi Yang, Yao Zhong Yang, Ding Yuan Liu, and others.