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. Author manuscript; available in PMC: 2007 Nov 27.
Published in final edited form as: Anal Chim Acta. 2007 Aug 6;599(2):219–231. doi: 10.1016/j.aca.2007.08.007

Figure 3.

Figure 3

Averages for the 3 classes of MALDI-MS spectra for a reduced range of [8, 9] kDa. The peak for ubiquitin (MW 8.565 kDa) was one of the internal mass calibration standards.