Microtissues and Molds (IMAGE) Brown University Caption Researchers are now able to develop complex microtissues (B,D) that take on the shape of molds they have designed into a 3-D Petri dish (A,C). That technique could reduce the need for certain kinds of animal-based research. Credit Credit: Morgan Lab/Brown University 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.