1. The Biotechnology Center, University of Yaoundé I, Yaoundé, Cameroon.
2. Department of Animals Biology and Physiology, University of Yaoundé I, Yaoundé, Cameroon.
3. Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan.
4. Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, U.S.A..
5. Department of Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan.
6. National AIDS Control Committee, Yaoundé, Cameroon.