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Hepatitis C. Light micrograph of a needle biopsy from the liver of a patient with hepatitis C. T-cells (dark stained), a type of white blood cell have infiltrated the liver tissue from the portal venous system. Hepatitis is a viral disease that causes inflammation of the liver, which leads to degeneration and thickening (scarring) of the tissue (cirrhosis). The virus is transmitted by blood-to-blood contact. Treatment is with antiviral drugs and immune system modulators.
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