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. 2019 Mar 12;19:251. doi: 10.1186/s12879-019-3872-z

Fig. 4.

Fig. 4

Analysis of the cross-reactivity of the IBMP-8.1 and IBMP-8.4 chimeras to sera with Toxoplasma gondii antibodies (n = 98) and Zika virus antibodies (n = 75). The cut-off value is 1.0 and the grey zone is RI = 1.0 ± 0.10. Lines and whiskers represent geometric means (± 95% CI). GZ, grey zone; RI, reactivity index; ZIKV, Zika virus