Book excerpt: Recombinant DNA technology has enabled the efficient production of large quantities of many biologically important glycoproteins by expression in heterologuous mammalian cell lines. In such quantities these glycoproteins can be used not only in basic research but also - after manufacturing by biotechnological means - for commercial purposes. A recent GBF workshop (Braunschweig, Germany, June 1990) was devoted to this highly significant field. In 39 contributions world-leading experts give a state-of-the-art description ranging from basic research reports to perspectives of practical applications. Pharmaceutical companies involved in the production of clinically important glycoproteins (such as immune-modulators, differentiation factors, hormones and receptors) will find this book indispensable. Researchers from industrial laboratories with an emphasis on biotechnology will also find the book invaluable for their daily work.