A Framework of All Discovered Immunological Pathways and Their Roles for Four Specific Types of Pathogens and Hypersensitivities

Although a number of host immunological pathways have been discovered including the traditional TH1/TH2, TH3, TH17, TH22, Tfh, Treg, TH9, and Tr1 (TH) pathways, they are not logically organized. In this article, I have described a detailed and complete picture of the host immunological pathways (Figure