Molecular virology refers to the study of molecular structures and characteristics of viruses. It is aimed at analysing in detail, the specific viral genes and their products. This book provides significant information on molecular virology and provides a comprehensive overview on concepts such as life cycle of viruses, molecular analysis of viruses infecting agricultural crops, use of virus strains for developing vaccines and pharmaceuticals, etc. The book is appropriate for students seeking detailed information in this area as well as for experts.