Enzyme-linked immunosorbent assay-based inhibition test for neutralizing antibodies to polioviruses as an alternative to the neutralization test in tissue culture.

A poliovirus-binding inhibition test (PoBI test) was established for the quantitative determination of antibodies to polioviruses and was evaluated in comparison with the conventional neutralization test (NT). The first step of the PoBI test is an incubation of serial dilutions of test samples with inactivated poliovirus followed by the detection of free viral epitopes by a double antibody sandwich enzyme-linked immunosorbent assay with type-specific capture polyclonal antisera and type-specific neutralizing monoclonal indicator antibodies. A comparison of the PoBI test with the conventional NT for antibodies to all three types in 100 human serum samples showed excellent correlations (r > 0.

A sandwich ELISA for bovine serum in viral vaccines.

A double antibody sandwich ELISA for the detection of bovine serum in viral vaccines was developed and standardized with commercially available reagents. The detection limit by ELISA was 0.5 ng ml-1.

The development and standardization of an ELISA for ovalbumin determination in influenza vaccines.

A double antibody sandwich enzyme-linked immunosorbent assay (ELISA) for the detection of ovalbumin in influenza vaccines has been developed and standardized. Commercially available reagents were used. ELISA was compared to single radial immunodiffusion (SRD) and immunoelectro-osmophoresis (IEOP) techniques.

The development and standardization of an antigen detection ELISA for rubella virus grown in rabbit cells.

A double antibody sandwich ELISA for the detection of rubella virus antigen was developed and standardized. Commercially available antisera were chosen in order to make the assay readily available. Antigen detection gave an excellent correlation to titers obtained by examination of cytopathogenic effect (CPE, r = 0.

An enzyme-linked immunosorbent assay, ELISA, for SV40 antigen detection.

The exclusion of SV40 contamination in poliovaccine produced in Cynomolgus monkey kidney cell cultures is routinely done by inoculation of the inactivated vaccine into Cercopithecus monkey kidney cell cultures where a cytopathic effect reveals the presence of the virus. An ELISA is described for the detection of SV40 antigen and the efficiency of antigen detection was compared with the development of cytopathic effect in Cercopithecus tissue cultures. The assay shortened considerably the time for production control and was in full agreement with the conventional test method.