MOHAMED E. EL ZOWALATY1* and BÉLA GYETVAI 2 1Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Faculty of Medicine and Health Sciences, University Putra Malaysia, Malaysia 2Department of Pharmacology and Toxicology, Faculty of Veterinary Science, Szent István University, Budapest, Hungary *Corresponding author: M.E. El Zowalaty,  Laboratory of Vacc...