This third edition of a text for introductory and intermediate undergraduate students offers a full-color art program, with a wealth of detailed explanatory diagrams and computer-generated images. It contains a new chapter on HIV and the lentiviruses, as well as a new section on new approaches and problems in viruses, with chapters on the molecular tools used to study viruses, viral pathogenesis at the molecular level, viral genomics and bioinformatics, and viruses and the future. The glossary has been revised, and there are new case studies which provide a clinical perspective of the viral diseases. Other pedagogical features include chapter outlines, review questions, problems, and web links. Wagner was professor of molecular biology and biochemistry at the University of California-Irvine. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)