Cell Connections (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption How to build a microtissue: At the bottom, cells bearing complementary single strands of DNA on their surfaces react with each other to form stable cell–cell contacts. At center are Jurkat cells stained red or green, labeled with different, complementary DNA sequences, and combined at a ratio of 50 (red) to 1 (green). At top, the two cell types are shown joined in a 3-D multicellular structure. Credit Carolyn Bertozzi, Lawrence Berkeley National Laboratory Usage Restrictions with credit as above 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.