Stefanus, R., Biomedical Program, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia, Department of Physiology, Faculty of Medicine, Universitas Pelita Harapan, Tangerang, Indonesia; Yolanda, S., Department of Physiology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Antarianto, R.D., Department of Histology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia