production of btv proteins in mononuclear cell cultures was detected by immune precipitation of viral proteins from [ 35s ] methionine-labelled extracts of these cells , by immunofluorescence staining of cells using monoclonal antibodies ( mabs ) to btv proteins vp7 and ns2 , and by flow cytometry with mabs to vp2 , vp7 , ns1 and ns2 .
C0033684
proteins
C0042736
viral proteins