Fluorescence microscopy of mitochondrial morphology in bck1∆ cnc1∆ cells expressing constitutively activated Rho1 (RHO1 G19V). The mitochondria predominantly exhibit interconnected reticular phenotype. Image by Katrina F. Cooper (Rowan University School of Osteopathic Medicine, NJ, USA); modified by MIC. The cover is published under the Creative Commons Attribution (CC BY) license.