standardization of enzyme-linked immunosorbent assays (elisas) for quantitative estimation of antibodies specific for infectious bovine rhinotracheitis virus, respiratory syncytial virus, parainfluenza-3 virus, and bovine viral diarrhea virus. | commercial enzyme-linked immunosorbent assays (elisas) for detection of serum antibodies to bovine viral diarrhea virus (bvdv), parainfluenza-3 virus (pi3v), respiratory syncytial virus (rsv), and infectious bovine rhinotracheitis virus (ibrv) were standardized to give a quantitative result when testing was performed at a single optimum dilution. for each test, serum samples were titrated and their end point titers calculated by an algebraic method directly from a plot of each titration series a ... | 1997 | 9087921 |