Influenza virus is a pathogen of great medical importance that causes seasonal epidemics and sporadic pandemics. Among the least understood events of the influenza virus lifecycle are the processes that mediate the formation of new viruses and their release from the host cell by membrane scission. Recently we have found a novel role for the influenza virus M2 protein in virus budding, the mediation of membrane scission. The aim of this research is to investigate the molecular details of how M2 alters the shape of the membrane. This will be determined by studying the interactions of the M2 protein with a lipid membrane using neutron reflectivity.