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Figure 9
Integrated area under the peak at 8983 eV, which is proportional to the amount of Cu+, as a function of exposure time for a Cu insulin sample prepared with saccharose at 20 K. The formation of Cu+ has been modelled using a pre-equilibrium mechanism which includes two different Cu+ species, B and C, with concentrations [B] (solid grey line) and [C] (dashed grey line), respectively (see equation 1[link]). The total amount of Cu+ from the model [B + C] (black solid line) has been fitted to the experimental data (circles).

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
Volume 70| Part 1| December 2014| Pages 110-122
doi:10.1107/S1399004713029040
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