Scientists at Tel Aviv University have discovered that the white blood cells called Eosinophils secrete powerfully destructive proteins that can kill tumors. When activated by the protein IFN-gamma, they induced an even greater immunotherapy response and a new anti-cancer pathway.

https://www.jewishpress.com/news/science-and-tech/israeli-research-white-blood-cells-related-to-allergies-asthma-may-also-destroy-cancer-cells/2019/01/22/