Rat Ventricular Myocytes Cardiac myocytes were stained for mitochondria (red), DNA (blue), and F-actin (green) and imaged by deconvolution microscopy in the UCSD Cancer Center Digital Imaging Shared Resource. Mitochondria provide some of the energy required for cardiac cells to beat, and F-actin is critical in providing force for the contraction of heart cells. Perspective views were rendered by Alex DeCastro at the San Diego Supercomputer Center using NPACI Scalable Visualization Tools. The work is from John W. Adams, Amy L. Pagel, Christoper K. Means, Donna Oksenberg, Robert C. Armstrong, Joan Heller Brown of the Department of Pharmacology, UCSD (Circulation Research; 2000 87: 1180 - 1187.)