The second edition of this popular book provides an overview of the impact which recombinant DNA (rDNA) technology is having on medical practice. Called molecular medicine, this rapidly expanding area has an increasing role to play in medicine and this book addresses the importance of this challenging area. This new edition has been fully updated with the developments of the last few years. Key genes identified include BRCA1 (breast cancer) OB (obese) and those involved in DNA repair. In addition the author covers the increase in gene therapy trials and the shifting of emphasis from genetic disorders to the cancers and HIV infection.