The publication of Bronchoalveolar Mast Cells and Asthma marks the emergence of The Bloomsbury Series in Clinical Science, an important and novel series that will highlight, review and record major areas of research, development and practice in the field of clinical science. A number of other monographs are now in an advanced state of preparation and their release will establish not only their individual significance but that of the series as a whole. My thanks are due to the Editorial Board who have provided the ideas and selected the authors and whose continuing enthu­ siasm is so vital to the success of the series. Michael Jackson of Springer-Verlag merits special thanks for initially realising the potential of such a series and then guiding us all through to the time of its launch. Marianne Williams has supported us all and has provided the important link between Editorial Board and pub­ lisher. The author of this first publication, Kevin Flint, was tragically killed during its preparation, and we hope that the book will serve as a tribute to the memory of Kevin for all who were lucky enough to know him. Barry Hudspith has been of enormous help in finalising the work and in shaping the form of the book.