Table of Contents

Free-Living Protozoa with Endosymbiotic Methanogens.- Anaerobic Ciliates and Their Methanogenic Endosymbionts.- Symbiotic Methanogens and Rumen Ciliates.- The Methanogenic and Eubacterial Endosymbionts of Trimyema.- Termite Gut Flagellates and Their Methanogenic and Eubacterial Symbionts.- Methanogens in the Digestive Tract of Termites.- Methanogenic Archaea in Humans and Other Vertebrates.- Methanogens in the Gastro-Intestinal Tract of Animals.- Syntrophy in Methanogenic Degradation.- Hydrogenosomes.- Evolution of Prokaryote-Animal Symbiosis from a Genomics Perspective.