Contents. List of Contributors. Preface. The Polymerase Chain Reaction (P.A. Kitchin and N. almond). Construction of Ordered Gene Libraries (N.G. Stoker). Diagnosis and Prevention of Exotic Virus Diseases: Application of Recombinant DNA Technology (J.C.S. Clegg). Structure, Organization and Function of Transfer RNA Genes from the Cellular Slime Mold Dictyostelium Discoideum (R. Marschalek and T. Dingermann). Optimizing Post-Transcriptional Steps of Gene Expression in Escherichia Coli (J.E.G. McCarthy). Resistance of Herpesvirus and Human Immunodeficiency Virus to Antiviral Drugs (G. Darby and B.A. Larder). Molecular Genetics of Host Specificity in Plant Pathogenic Bacteria (A. Vivian). Cloning and Structure of Genes from the Autotrophic Biomining Bacterium Thiobacillus Ferrooxidans (D.E. Rawlings, D.R. Woods, and N.P. Mjoli). Direct Sequencing of RNA Using Dideoxynucleotides (M. Kaartinen, M.L. Solin and O. Maekelae). Extrachromosal Elements of the Genus Chlamydia (M. Lusher, C.C. Storey, and S.J. Richmond). The Cytomegalovirus Major Immediate Early Promoter and its Use in Eukaryotic Expression Systems (G.W.G. Wilkinson and A. Akrigg). Index.