The first steps in infection with paramyxoviruses are binding to the target cells, via interaction of the viral receptor-binding molecule (G for HeV or NiV) with the specific receptor molecules on the cell surface –EFNB2 (Ephrin-B2) for HeV, and both EFNB2 and EFNB3 for NiV, followed by the fusion of the viral envelope with the plasma membrane of the cell, a process mediated by the viral fusion protein (F). Here, EFNB2 is linked to infection.