Contents

03 July 2012
Vol 5, Issue 231

About The Cover

Cover image expansion

Online Cover This week features a Research Article that describes how reactive oxygen species generated by mitochondria that redistribute near the nucleus promote transcriptional responses to low oxygen concentrations (hypoxia). The image shows the hypoxia-induced redistribution of mitochondria (red) around nuclei (blue) in pulmonary artery endothelial cells. [Image: Abu-Bakr Al-Mehdi/University of South Alabama College of Medicine]