FOXP3 and infection: To explore whether FoxP3 could be tackled as a putative target of immunotherapy against chronic E. multilocularis infection, female‐10‐week‐old DEREG mice were intra‐peritoneally infected with E. multilocularis, and subsequently treated with DT for 3 months after the infection was established, that is, at 6 weeks p.i..