The Biology of Animal Viruses, Second Edition deals with animal viruses focusing on molecular biology and tumor virology. The book reviews the nature, chemical composition, structure, and classification of animal viruses. The text also describes the methods of isolating animal viruses, how these are grown in the laboratory, assayed, purified, and used in biochemical experiments. The book also describes the structure and chemistry of many known viruses such as the papovaviridae, herpes virus, poxvirus, coronavirus, or the Bunyamwera supergroup. The book then explains the structure and function of the animal cell including the cytoplasmic organelles, the nucleus, inhibitors of cell function, and viral multiplication. Other papers discuss in detail the multiplication of the DNA and RNA viruses, whose mechanisms of multiplication differ from those of other viruses. Other papers discuss the known prevention and treatment methods of viral diseases, as well as the epidemiology and evolution of viral diseases resulting from human’s disturbance of the biosphere and from medical and experimental innovations. The text can prove useful for immunologists, veterinarians, virologists, molecular researchers, students, and academicians in the field of cellular microbiology and virology.