hepatitis B virus n.
Causative agent of viral hepatitis type B. Also called serum hepatitis virus.
hepatitis B n.
A form of hepatitis caused by a DNA virus that persists in the blood serum and is transmitted by infected blood or blood derivatives, or by contaminated needles or other instruments. The disease has a long incubation period and symptoms that may become severe or chronic, causing serious damage to the liver. Also called serum hepatitis.