Printing your own inkjet microarrays.

DNA arrays are now the tools of choice for high-throughput DNA/RNA analysis. While many technologies exist for mass-producing arrays, there are just a few ways to economically produce small batches of custom oligonucleotide arrays for prototyping experiments and specialized applications. Inkjet printing, adapted from the world of office electronics to the world of molecular biology, is one such method.

POSaM: a fast, flexible, open-source, inkjet oligonucleotide synthesizer and microarrayer.

DNA arrays are valuable tools in molecular biology laboratories. Their rapid acceptance was aided by the release of plans for a pin-spotting microarrayer by researchers at Stanford. Inkjet microarraying is a flexible, complementary technique that allows the synthesis of arrays of any oligonucleotide sequences de novo.