3DAT (IMAGE) Penn State Caption This image shows the formation of arbitrary cell culture patterns forming a "3," "D," "A." and "T" by printing of single HeLa S3 cells via 3-D acoustic tweezers. Credit Tony Jun Huang, Penn State Usage Restrictions Non-commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.