1
Department of Neurology & Division of Newborn Medicine Harvard Medical School Boston, Masscusetts, USA
2
Department of Pediatrics, Pharmacology, & Brain Yonsei University College of Medicine Seoul, Korea, USA esnyder1@caregroup.harvard.edu
Stroke and irradiation can cause severe brain damage, with consequences for neuronal replacement. The results of two new studies may help us understand the barriers to effective therapies to restore injured brain tissue (pages 955−962 and 963−970).