<prompt> Which myxovirus does not have hemagglutinin and neuraminidase but have membrane fusion protein -MeaslesParainfluenzaRSVInfluenza  <response>: Ans. is c i.e., RSV RSV does not posses hemagglutinin or neuraminidase. The viral envelope has two glycoproteins? i G protein - By which virus attaches to cell surface ii F- protein Fusion protein - which bring about fusion between viral and host cell membranes. It is also responsible for cell to cell fusion, which leads to characteristic syncytial formation. 