title: Evolution of lymphocytes and vertebrate alloimmune reactivity.
mesh_terms: D000818:Animals; D001665:Binding Sites; D005075:Biological Evolution; D006084:Graft Rejection; D006087:Graft vs Host Reaction; D007111:Immunity, Cellular; D007519:Isoantigens; D008214:Lymphocytes / Q000276:immunology*; D008221:Lymphoid Tissue / Q000276:immunology; D010802:Phylogeny; D013601:T-Lymphocytes / Q000276:immunology; D013696:Temperature; D014714:Vertebrates / Q000276:immunology*
chemical_list: D007519:Isoantigens