AUTHOR=Hillis Argye E. , Baron Jean-Claude TITLE=Editorial: The Ischemic Penumbra: Still the Target for Stroke Therapies? JOURNAL=Frontiers in Neurology VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2015.00085 DOI=10.3389/fneur.2015.00085 ISSN=1664-2295