A. Desoky, Hayam. “The Level of T Cells Specific to the SARS-Cov-2 Virus and Asymptomatic Infection and the Immunogenicity of a Vaccine”. History of Medicine 9, no. 1 (February 28, 2023). Accessed September 27, 2024. http://13.200.237.241/HOM/index.php/medicine/article/view/852.