1 “... because we know more about them. We have come to a deeper appreciation, while preparing this book...”

2 “... of Springer-Verlag in the publication of this monograph is also greatly appreciated. Ann Arbor, Michigan, USA...”

3 “... often be more easily appreciated and understood in relation to its development. Some insight about...”

4 “... understanding of histochemistry. This book contains the information they would have greatly appreciated ready...”