This new edition of a highly popular biochemistry text introduces the student to the basic principles of techniques that are used routinely in modern biochemistry and molecular biology. Its coverage is comprehensive, giving great attention to those techniques that undergraduate students of biosciences can expect to encounter in their practical classes. Principles and theory are discussed alongside details of equipment used and applications of the techniques. The book wil also be of interest to postgraduates undertaking projects of a biochemical or molecular biological nature.