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. 2018 Jan 18;8:1118. doi: 10.1038/s41598-017-19063-6

Figure 3.

Figure 3

IgG Ab and specificity responses in immunized mice. Groups of 6- to 8-week-old female C57BL/6 mice (n = 6) were immunized subcutaneously with 10 µg of each recombinant protein and Poly (I:C) (50 µg/dose) or Montanide ISA720 (7:3). IgG titres were measured by ELISA against the homologous proteins and individual full-length PvCSP variants. (a) PvCSP-VK210. (b) PvCSP-VK247, and (c) PvCSP-P. vivax-like. The results are expressed as the arithmetic mean titres of each group (log10 ± SEM), and were compared by one-way ANOVA followed by Tukey test for multiple comparisons. Significant differences between groups are denoted on the graph as follows: *P < 0.05, **P < 0.01, and ***P < 0.001. Non-significant (ns) differences are indicated (P > 0.05). (d) The elicited Abs recognised the different allelic variants and were directed at the central repeats, as shown by assays against the repeats fused to flagellin FliC (FliC-PvCSP-repeats) after three doses.