. "assay"@en-us . . "00791527-n"^^ . . "0.375"^^ . "100742314"@en-us . . . "assay"^^ . . . . . "a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc."@en-us . . "100791527"^^ . "0"^^ . "a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc."@en-us . .