Figure 1: Cross-neutralization among JEV, YFV and DENV14. The abscissa indicates virus species used for preparing hyperimmune mouse ascitic fl uids (HMAF) or hyperimmune mouse sera (HMS). The ordinate indicates neutralizing antibody titers obtained with HMAF or HMS as determined by the neutralization tests using JEV, YFV and DENV14 (indicated in the box).