“One of the ways of making bioengineered tissues is to embed living cells within 3D printed structures. But one challenge has been organizing the cells in 3D bioprinted gels, so that the engineered tissue more closely mimics natural tissues. Researchers at North Carolina State University have developed a way to improve the characteristics of artificial tissues by using ultrasound to align living cells during the biofabrication process…”

Source:
https://www.3ders.org/articles/20190411-new-technique-uses-ultrasound-to-align-living-cells-in-3d-bioprinted-tissues.html