Packed Cells (IMAGE) Stevens Institute of Technology Caption Densely packed cyanobacteria (green) achieved via 3D printing increases electricity-generating behavior. Credit Sudeep Joshi, Stevens Institute of Technology Usage Restrictions None 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.