Recent insights into adaptive immune responses in other phyla have highlighted that the ability to elicit adaptive immune responses to diverse antigens is unique to chordates that the entire animal kingdom uses identical methods to maintain antigen diversity that the evolution of antibody diversity has led to chordates being superior to all other phyla that many other species have evolved similar mechanisms to sense many diverse antigens Question 28 0.2 pts Eosinophils are a subset of granulocytes that normally reside in the circulation. When activated, these cells secrete toxic compounds that are a key component in the eradication of helminthic parasite infections. Eosinophils are recruited to sites of parasite infections by: Interferon-gamma produced by TH1 cells GM-CSF produced by TH1 and TH17 cells CCL20 produced by TH17 cells CCL11 produced by TH2 cells Interferon-gamma produced by CD8 cytotoxic T cells .