Sarah Abdul Hameed Sahib, Ghassan Mohammad Sulaiman and Huda J. Waheed (2024) “Evaluation of the Frequency of  (rs2227981 and rs2282055) Single Nucleotide Polymorphisms in Programmed Cell Death 1 and Its Ligand Genes of Iraqi Patients With Multiple Sclerosis”, Iraqi Journal of Pharmaceutical Sciences( P-ISSN 1683 - 3597 E-ISSN 2521 - 3512), 33(3), pp. 209–217. doi:10.31351/vol33iss3pp209-217.