Professor at Research Institute for Microbial Diseases and the Immunology Frontier Research Center at Osaka University found that p62, a host molecule, played an important role in exerting immune effects of an experimental pathogenic parasite toxoplasma-inactivated vaccine. This group's achievement is expected to offer strategies for developing a toxoplasma-inactivated vaccine targeting p62 for treating toxoplasmosis, whose case reports have been on the rise in Japan in recent years.