Establishment of cell lines stably expressing mumps virus glycoproteins.

We established two cell lines that stably express hemagglutinin-neuraminidase (HeLa-HN) and fusion proteins (HeLa-F) of a fusogenic strain of mumps virus. Infection of HeLa-F cells with a nonfusogenic strain resulted in induction of extensive cell fusion. On the other hand, HeLa-HN cells appeared resistant to cell fusion induced by mumps virus infection.