1. Department of Histology, Faculty of Dentistry, Trisakti University, West Jakarta, Indonesia
2. Department of Anatomy, Physiology, and Pharmacology, Faculty of Veterinary Medicine, Bogor Agricultural University, West Java, Indonesia
3. Department of Clinic, Reproduction, and Pathology, Faculty of Veterinary Medicine, Bogor Agricultural University, West Java, Indonesia
4. Department of Biology Oral, Faculty of Dentistry, Trisakti University, West Jakarta, Indonesia