| antigenic comparison of canadian and us isolates of porcine reproductive and respiratory syndrome virus using monoclonal antibodies to the nucleocapsid protein. | fifteen canadian field isolates of porcine reproductive and respiratory syndrome (prrs) virus from quebec and ontario were compared with 5 us prrs virus (prrsv) isolates and with the european lelystad isolate using monoclonal antibodies (mabs) sdow17, ep147, and vo17 directed to the 15-kda nucleocapsid protein of prrsv. all canadian and us isolates tested by indirect immunofluorescence were recognized by the 3 mabs, and individual titers of mabs towards canadian and us prrsv isolates were simila ... | 1995 | 8521358 |