J. M. Polak and S. R. Bloom For some time Experientia has published, as a unique feature, interdis- ciplinary multi-author reviews, giving a comprehensive overview of sub- jects regarded as 'growing edges' of science. The enthusiasm shown by the readers was contagious and thus it was felt necessary to compile a special volume dealing with the novel aspects of regulatory peptides. This book covers some of the growing areas in regulatory peptide research...