th It is a great pleasure for me to open the jubilee 25 International Symposium on Blood Transfusion here in Groningen. This symposium is co-sponsored by the World Health Organization and is being held under the auspices of the ISBT and the Secretary General of the Council of Europe, Mr Walter Schwimmer. The patronage was granted with great pleasure for several reasons. First of all, Dutch experts are very active in our Committees and have largely contributed in developing the Council of Europe principles in the blood area. Secondly, the Council of Europe is active today in the area of blood...