It is a genuine honor and a privilege of distinction to provide the foreword for the proceedings that follow. This marvelous symposium reflects the unique qualities of its two principal sponsors. Whenever the Oregon Regional Primate Research Center is involved in matters of science, we see a consistent record of exceptional quality in both the work is unequaled and the people who do it. Likewise, Serono Symposia, USA in assuring a world-class speakers' forum, utterly without taint of commercial influence. The proceedings published herein are a remarkable testimony, not only to the...