Chemistry: molecular biology and microbiology – Apparatus – Including measuring or testing
Reexamination Certificate
2006-11-21
2006-11-21
Chin, Christopher L. (Department: 1641)
Chemistry: molecular biology and microbiology
Apparatus
Including measuring or testing
C422S051000, C435S006120, C436S527000, C436S809000
Reexamination Certificate
active
07138268
ABSTRACT:
An assay plate for detecting the presence of a mobile reactant that binds to a immobilized reactant and the methods of making and using the same. An assay plate according to the present invention includes a substrate and at least one dried aliquot of the immobilized reactant, the immobilized reactant being bound to the surface of the substrate. The immobilized reactant binds the mobile reactant when a solution containing the mobile reactant is brought into contact with the immobilized reactant. The mobile and immobilized reactants may be any pair of biological compounds that have a specific affinity for one another. For example the reactants may be nucleic acids or antibody-antigen pairs. The preferred embodiment of an assay plate according to the present invention includes a plurality of assay spots, each spot having a different immobilized reactant or concentration thereof. The preferred method for fabricating an assay plate according to the present invention includes the steps of binding the immobilized reactant to the substrate, washing the substrate to remove any immobilized reactant that is not bound to the substrate and then drying the substrate. The dried assay plates are preferably stored in a water-proof container until used. An assay utilizing an assay plate according to the present invention is carried out by bringing a solution containing the mobile reactant into contact with the dried aliquot or aliquots on the assay plate. The assay plate is then washed to removed unbound material and the amount of mobile reactant bound to the washed assay plate determined. In the preferred embodiment of the present invention, the washed assay plate is dried prior to measuring the amount of mobile reactant bound to the washed assay plate.
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Agilent Technologie,s Inc.
Chin Christopher L.
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