the ebv-determined early nuclear antigen ( ena ) , early antigen ( ea ) and viral capsid antigen ( vca ) could be induced at a high rate in producer cells ( p3hr-1 and b95-8 ) , normally expressing these antigens at very low frequency , as early as 12-24 h after fusion with each other or with human amnion fl cells .
C0003342
viral
C0003320
antigens