Polymorphisms within Fas gene are not associated with occult hepatitis B virus infection
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2011 Kowsar M.P.Co. All rights reserved."/> Background: Occult hepatitis B infection (OBI) is a form of hepatitis in which there is an absence of detectable HBsAg, despite the presence of HBV-DNA in the peripheral blood of patients. It seems that non-effective or attenuated immune system responses against HBV lead to the development of OBI. Previous studies showed that the Fas/Fas ligand (FasL) system is an important death signaling pathway that is used by cytotoxic T lymphocytes to eradicate HBV from the liver.
2011 Kowsar M.P.Co. All rights reserved."/>