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Particulate compositions for chemical synthesis

Image Number 13 for United States Patent #6838447.

Disclosed are compositions that include triboelectrically chargeable nucleotide particles of less than 50 .mu.m diameter and carrier particles. In one example, a substrate is selectively patterned with the compositions, e.g., by transfer from a selectively charged surface. The compositions can be used to synthesize nucleic acid arrays.

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