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. 2014 Jan 9;9(1):e85533. doi: 10.1371/journal.pone.0085533

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© 2014 Pisani et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Gel purified inositol pyrophosphates (A) were subjected to mass spectrometry (B,C). The comparison of the m/z spectrum of IP₇ (B) and IP₈ (C) is shown. The peaks in the spectra describing inositol pyrophosphates purified from D. discoideum are in agreement with the theoretical values for molecular weight that are deduced to be 738.82 Da and 818.78 Da respectively.