| http://www.w3.org/ns/prov#value | - A method for attaching a polynucleotide to a preselected material selected from the group consisting of a solid support, an insoluble matrix, a protein, a small molecule, and a label which comprises:(a) attaching a first polynucleotide, through its 5' or 3' end, to a linking agent represented by the formula (R1)n R2 R3 wherein R1 is a functional group selected from the group consisting of --COOH,
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