I reported previously (Apr 2015) about Professor Yehuda Shoenfeld of Israel’s Sheba Hospital. He has now founded startup TPCera which found that parasitic Helminth worms excrete a substance that stops the immune system attacking it.  It can be used to treat auto-immune diseases.

https://worldisraelnews.com/watch-israeli-autoimmune-disease-treatment-with-parasitic-worms-has-marvelous-results/

https://www.youtube.com/watch?v=AIwp1P8V3so