Queen Mary University of London's Pedro Cutillas and colleagues from the UK describe phosphoproteomic analyses of cancer cell lines and potential applications of this information in the early, online edition of Genome Biology. When the researchers used mass spectrometry to assess phosphorylation levels at some 2,000 sites in nine cancer cell lines — three representatives apiece from acute myeloid leukemia, lymphoma, and multiple myeloma — they found that cell lines tended to cluster by cancer type.

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