NCIt definition : A humanized monoclonal antibody directed against the respiratory syncytial virus (RSV)
fusion glycoprotein (F-protein), with activity against RSV. Motavizumab targets and
binds to the RSV F-protein, which prevents F-protein-mediated RSV fusion with human
host cells. This protects against RSV infection. RSV F-protein mediates RSV attachment
and fusion to host cells.;