<Ol><b><li>Overview of Laboratory Testing and Clinical Presentations of Complement Deficiencies and Dysregulation</li></b><i> <p>Ashley Frazer-Abel, Lusia Sepiashvili, Michael M. Mbughuni and Maria Alice V. Willrich</p></i><b> <p><li>Autoimmunity in Crohn's Disease -- A Putative Stratification Factor of the Clinical Phenotype</li> </b><i> <p>Dirk Roggenbuck, Dirk Reinhold, Daniel C. Baumgart, Peter Schierack, Karsten Conrad and Martin W. Laass</p></i><b> <p><li>Monitoring Oxygen Status </li> </b><i> <p>John G. Toffaletti and Craig R. Rackley</p></i><b> <p><li>Microvesicles in Autoimmune Diseases</li> </b><i> <p>Ming-Lin Liu, Kevin Jon Williams and Victoria P. Werth</p></i><b> <p><li>Tandem Mass Spectrometry of Sphingolipids: Applications for Diagnosis of Sphingolipidoses</li> </b><i> <p>Ladislav Kuchař, Befekadu Asfaw, Jitka Rybová and Jana Ledvinová</p></i><b> <p><li>Advances in Blood Typing </b><i>NurJehan Quraishy and Suneeti Sapatnekar</li></ol></i>