althahab, Azhar .A. L., and wasan sami shuker. “Effect of Hibiscus Sabdraffira and Tea Extract on Cellular Immunity in Lab Animals”. Al-Kufa University Journal for Biology 3, no. 2 (November 15, 2011). Accessed August 7, 2026. https://journal.uokufa.edu.iq/index.php/ajb/article/view/9308.