Agilent Technologies of Palo Alto, Calif., has received US Patent No. 6,852,850, “Use of ionic liquids for fabrication of polynucleotide arrays.” The patent protects a method of fabricating polynucleotide arrays that includes dissolving a nucleotide monomer, oligonucleotide, or polynucleotide in a solvent containing ionic liquid and depositing the resulting solution on an array substrate. The method is particularly useful for fabricating an addressable array of polynucleotides on a substrate that carries moieties with hydroxyl groups.

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