Koohsari, Hadi, Ghaemi, Ezzat Allah, Amirmozaffari, Noor, Sadegh Sheshpoli, Maryam. “The effect of adding calf serum on the virulence genes expression of Staphylococcus aureus.” Journal of Microbial World, vol. 12, no. 1, 2019, pp. 73-83.