Microspot Arrays Engineer Substrate Rigidity (IMAGE) University of Pennsylvania Caption This image shows micromolded elastomeric micropost arrays that engineer substrate rigidity. Scanning electron micrographs of hMSCs are plated on PDMS micropost arrays. Images at the bottom are magnifications of the boxed regions in the top images. Scale bars, 100 μm (d–f, top), 50 μm (d, bottom), 30 μm (e, bottom) and 10 μm (f, bottom). Credit University of Pennsylvania 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.