A. A. Yousif, K. A. Khalifa, and S. A. Al-Samarrae, “Protective activity of specific transfer factor against Salmonella typhimurium infection”, Iraqi J. Vet. Med., vol. 25, no. 1, pp. 143–152, Nov. 2021, doi: 10.30539/ijvm.v25i1.1156.