1. From the Department of Internal Medicine, Section of Electron Microscopy, Faculty of Sciences, University of Jordan, Amman, Jordan
2. From the Department of Pathology, Section of Electron Microscopy, Faculty of Sciences, University of Jordan, Amman, Jordan
3. From the Faculty of Medicine, and Department of Biological Sciences, Section of Electron Microscopy, Faculty of Sciences, University of Jordan, Amman, Jordan