Shape-Sifting: NIST Categorizes Bio Scaffolds by Characteristic Cell Shapes (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption (Top) The same basic cell type grown on two different bio scaffolds (collagen gel and a grid-like scaffold made of a biocompatible polymer) adopts significantly different shapes. The superimposed ellipsoids are calculated from the dimensions of each cell. (Bottom) Plotting the characteristic ellipsoids for each cell by how round they are in the two major cross sections reveals that cells tend to different shapes on different scaffolds -- spheres at one extreme, long narrow rods at another. Credit Farooque,Camp,Simon/NIST Usage Restrictions None Share Print E-Mail 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.