A microfluidic device design that allows a nanolitre droplet to be trapped and sequentially diluted without the need for any moving parts opens up new possibilities in high-throughput screening.
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Walker, G. Pensioning off pipettes. Nature Chem 3, 428–429 (2011). https://doi.org/10.1038/nchem.1060
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DOI: https://doi.org/10.1038/nchem.1060
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