1. Introduction. - 1. 1 Virus characteristics. - 1. 2 Some virus definitions. - 2. Some representative viruses-size morphology ultrastructure and replication. - 2. 1 Size. - 2. 2 Morphology. - 2. 3 Ultrastructure. - 2. 4 Replication. - 3. Purification of viruses. - 3. 1 Plant viruses. - 3. 2 Insect viruses. - 3. 3 Viruses affecting the higher animals. - 4. Classification and nomenclature. - 4. 1 Introduction. - 4. 2 Viruses of invertebrates. - 4. 3 Viruses of bacteria. - 5. Some virus diseases in man and other animals. - 5. 1 Man and the higher animals. - 5. 2 Insects and other invertebrates. - 6. Some virus diseases in plants and micro-organisms. - 6. 1 Plants. - 6. 2 Micro-organisms. - 7. The spread of viruses from host to host. - 7. 1 Methods of (virus dissemination. - 7. 2 Viruses and vectors. - 8. Latency satellite and incomplete viruses viroids and virus-like particles. - 8. 1 Latency. - 8. 2 Satellite viruses and incomplete viruses. - 8. 3 Viroids. - 8. 4 Virus-like particles. - 9. The replication of viruses. - 9. 1 The virus-host relationship. - 9. 2 Adsorption and entry. - 9. 3 The eclipse. - 9. 4 Maturation. - 9. 5 Release of progeny virus. - 9. 6 Replication of bacterial viruses. - 9. 7 Replication of animal viruses. - 9. 8 Replication of plant viruses. - 10. Virus genetics. - 10. 1 The role of genetics in virology. - 10. 2 Variation among viruses. - 10. 3 Genetic analysis of viral functions. - 10. 4 Recombination and mapping virus genomes. - 11. Tumour viruses. - 12. Tissue and cell culture of viruses. - 12. 1 Plant viruses. - 12. 2 Animal viruses. - 13. Virus assay. - 13. 1 Plaque assay. - 13. 2 Plant virus assay. - 13. 3 Counting virus particles. - 13. 4 Mixed virus infections. - 14. Control of virus diseases. - 14. 1 Animal viruses. - 14. 2 Plant viruses. - 14. 3 Viruses as agents of biological control. - References. Language: English