Book excerpt: Structure and Function of Oxidation–Reduction Enzymes is a collection of papers presented at the Wenner-Gren Symposium held at the Wenner-Gren Center, Stockholm on August 23-27, 1970. It provides important understanding of the structure and function of oxidation-reduction enzymes: iron, flavin, and nicotinamide enzymes. This book discusses the functional differences among varying structures such cytochrome c, haemoglobins, dehydrogenases, flavins, oestrogens, and peroxidases. It concludes by presenting future expectations, including some questions that need to be addressed. This volume will be of great value to those interested in the present-day research on oxidation-reduction enzymes.