A new metric called the normalized spectral index (SIN) provides a simple way to quantify and compare label-free proteomics data.
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Sardiu, M., Washburn, M. Enriching quantitative proteomics with SIN. Nat Biotechnol 28, 40–42 (2010). https://doi.org/10.1038/nbt0110-40
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DOI: https://doi.org/10.1038/nbt0110-40