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. 2008 Dec 16;3(12):e3942. doi: 10.1371/journal.pone.0003942

Figure 3. Cross-clade H5N1 neutralizing activity and HA subunit localization.

Figure 3

(a) Neutralizing activity of purified IgG1 against 100 TCID50 of H5N1 viruses, the 50% neutralizing concentration (IC50) was calculated by the Spearman-Karber method. (b) Immunoblot of H5 rHA probed with indicated IgG1. Molecular weight marker (MW) and subunit locations indicated.