It can be inferred from the passage that all of the following are ways of producing new strains ofĐoạn văn15/48It can be inferred from the passage that all of the following are ways of producing new strains of influenza EXCEPT_______two influenza viruses in the same animal recombining animal viruses recombining with human virusestwo animal viruses recombining two animal viruses recombining in a human Giải thíchChọn D