Abstract Background Controversy exists regarding the role of PD1 and its ligand PD-L1 in chronic hepatitis B infection. In some studies. persistent HBV infection has been attributed to high levels of PD-1 and PD-L1 expression on HBV-specific T-cells and antigen-presenting cells (APCs) respectively. Other studies revealed that the up-regulation of PD-1 and PD-L1 during an acute inflamm... https://cwpmitr956b7b.bloginwi.com/68593953/seromolecular-study-on-the-prevalence-and-risk-factors-of-toxoplasma-gondii-infection-in-pregnant-women-referred-to-a-gynecology-hospital-in-urmia-northwest-part-of-iran-in-2022