| abstract |
Method for the immunological assay of a substance in a liquid sample, said substance comprising at least one important determinant for its identification, comprising reacting said liquid sample containing the substance to be assayed, of antibodies directed against said substance, specific for said determinant and anti-idiotypic antibodies directed against the specific antibodies and determining the amount of the substance in the sample by measuring the degree of inhibition caused by this substance on the binding reaction between the above antibodies. |