title: Preface.
authors.forename: Ellen
authors.initials: E
authors.lastname: Hsu
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000235:genetics / Q000276:immunology*; D005075:Biological Evolution; D014644:Genetic Variation / Q000235:genetics / Q000276:immunology*; D054884:Host-Pathogen Interactions / Q000235:genetics / Q000276:immunology; D006801:Humans; D007109:Immunity / Q000235:genetics / Q000276:immunology; D011946:Receptors, Antigen / Q000235:genetics / Q000276:immunology*
chemical_list: D000954:Antigens, Surface; D011946:Receptors, Antigen