Various immune pathways in the host, such as TH1, TH2, TH3, TH9, TH17, TH22, TH1-like, and THαβ, have been identified. While TH2 and TH9 responses primarily target multicellular parasites ...
[23] Estrogens are known to drive physiological selection of Th1 or Th2 pathways. A perturbation in immune receptor signaling may underlie the increase in autoimmune phenomena in the elderly ...