title: Changing antigenic character of venom.
mesh_terms: D000818:Animals; D000941:Antigens; D000997:Antivenins; D003429:Cross Reactions; D005779:Immunodiffusion; D012911:Snakes; D013997:Time Factors; D014688:Venoms
chemical_list: D000941:Antigens; D000997:Antivenins; D014688:Venoms