a serum neutralization inhibition test ( snit ) is being developed for potency testing of killed adjuvanted infectious bovine rhinotracheitis ( ibr ) , bovine virus diarrhea ( bvd ) and parainfluenza ( pi3 ) vaccines : and a tissue culture titration method for live avian encephalomyelitis virus vaccine is being pursued as a replacement for the old hatch-out chick embryo titration method .
C0042210
vaccines
C0042211
live