Parasitic worms offer 'the missing link' on the dual nature of a key immune regulator

Scientists explain how IL-33 can both help defend the body against parasite infection & suppress chronic inflammation in diseases where the immune system is activated inappropriately.

The activity of IL-33 depends upon which cell type is releasing it.

https://medicalxpress.com/news/2020-11-parasitic-worms-link-dual-nature.html