1. Immunovirology and Vaccine Development Laboratory, Medical Biotechnology Department, National Biotechnology Development Agency, Abuja, Nigeria;
2. RIKEN CDB CLST (Center for Life Science Technologies), Kobe, Japan;
3. Bioresources Development Center Odi, Bayelsa, National Biotechnology Development Agency, Abuja, Nigeria;
4. National Biotechnology Development Agency, Abuja, Nigeria