【正文】
ical and biotechnology industry. Although there are numerous texts that cover various aspects of protein purification techniques in isolation, there is a need for a work that covers the broad range of isolation technology in an industrial setting. ? It is anticipated that Downstream Processing of Proteins: Methods and Protocols will play a small part in filling this gap and thus prove a useful contribution to the field. It is also designed to encourage educational strategists to broaden the coverage of these topics in industrial biotechnology courses by including accounts of this important and rapidly developing element of the industrial process. ? The hope is that this will result in graduates having a reasonable understanding of downstream processing principles and techniques, and thus be better prepared to fulfill the everincreasing demand for petent isolation scientists in industries. ? This is, of course, achieved with the help of the dedicated contributing authors of Downstream Processing of Proteins: Methods and Protocols, without whose willingness to contribute and patience it would not have been possible. I would also like to thank the Humana Press and Prof. John Walker (the series editor) for their encouragement and prompt feedback. ? My thanks are also due to the Medeva Pharma Development management for providing me with the time and opportunity to f