Investigation of the presence of some virulence factors of the Streptococcus pneumoniae isolates among patients in Basra Governora. Iraqi Journal of Science [Internet]. 2018 Jul. 29 [cited 2024 Nov. 24];59(3A):1205-1. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/450