“Molecular Characterization of Virulence Genes (ply) in Streptococcus Pneumoniae Isolated from Humans”. Tikrit Journal of Veterinary Science 5, no. 1 (June 30, 2026): 36–43. Accessed August 27, 2026. https://tjvs.tu.edu.iq/index.php/tjvs/article/view/161.