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. 2014 Mar;52(3):725–735. doi: 10.1128/JCM.02315-13

FIG 4.

FIG 4

High-resolution MALDI-FT-ICR mass spectrum of a whole virus tryptic digest of a cell-cultured clinical specimen containing a pandemic type A H1N1 virus strain. All identified ions are listed in Table 3. Ions in bold indicate signature (*) and indicator (^) peptides.