This book is an account of the original papers presented by the participants of the 3rd Alexander Gurwitsch Conference on the Biophotonics and Coherent Systems in Biology, Biophysics and Biotechnology which took place in Tauric University (Crimea, Ukraine) September 27 – October 1, 2004. It features an introduction by Dr. Fritz-Albert Popp (International Institute for Biophysics), leading pioneer of biophotons.