The fifth edition of the highly successful "Principles of Molecular Virology" takes on a molecular approach to the explanation of virology, presenting basic in a clear, concise and student-friendly manner. This fully updated undergraduate text explores and explains the fundamental aspects of virology, including structure of virus particles and genome, replication, gene expression, infection, pathogenesis and subviral agents. A website with self-assessment questions and other resources aids in student understanding. This title is completely rewritten and updated. It is clear and easy to understand. It contains examples covering important ideas in virology. It features all new illustrations. It also features accompanying website with interactive resources and teaching material for instructors.