Biopsy: Microscopic examination of tissue, usually done by actually removing a small bit of tissue from a patient's body.

Blood borne substances: Substances present in the blood and carried throughout the body.

Centers for Disease Control and Prevention (CDC): Federal organization concerned with the prevention and control of communicable diseases.

Cirrhosis of the liver: Inflammation of the liver, such as infection with HCV. Fibrosis results  in the loss of liver cells and increased resistance to the flow of blood to the liver.

DNA: It carries hereditary genetic information.

Genotype: Genetic type of an organism.

Gammaglutamyltransferase (GGT)

Hepatic: Related to the liver.

Hepatology: A branch of medicine that focuses on diseases of the liver.

Immune System: A system by which the body defends itself against invasion by bacteria, viruses, fungi, parasites, and malignant cells.

Interferon: A protein the body makes as a natural part of it's immune system in a rapid defense against infection.

Liver biopsy: Microscopic exam of tissue taken from the liver that is used to look for the presence of liver damage.

Myalgia: Muscular pain.

Non-responders: Patients who do not respond positively to therapy.

Remission: Partial or complete disappearance- or a lessening of the severity-of the symptoms of a disease.

Serum: The fluid portion of blood after it has clotted.

Plasma: The fluid portion of blood before it has clotted.

Side effect: An undesirable effect on the body from a drug or therapy.

Subcutaneous Injection: Injection given under the skin.

T cells: Cells that reject foreign tissue, regulating cellular immunity, and controlling the production of antibodies.

Viral load: The measurement of the amount of a given virus in the bloodstream.

Whole-body-rash: A rash that covers much or all of the body.

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