Neurovirulence of Polytropic Murine Retrovirus Is Influenced by Two Separate Regions on Opposite Sides of the Envelope Protein Receptor Binding Domain

Karin E . Peterson, Susan Pourciau, Min Du, Rachel LaCasse, Melissa Pathmajeyan, David Poulsen, Mavis Agbandje-McKenna, Kathy Wehrly and Bruce Chesebro

Journal of Virology 82 ( 17 ): 8906 - 8910 , 2008