Angioimmunoblastic T-Cell Lymphoma (AITL) is a rare and aggressive type of nodal or soft tissue lymphoma. Nodal lymphomas are restricted to lymph nodes, and generally do not enter the blood stream, until later stages of the disease.
Hepatitis A virus is a picornavirus, a small single strand RNA virus; hepatitis B virus belongs to the hepadnavirus family of double stranded DNA viruses; hepatitis C virus is a flavivirus, a single stand RNA virus; hepatitis E, also an RNA virus, is similar to a calicivirus.uman hepatitis B virus (figure 3) is the prototype virus of the hepadnavirus family and causes serum hepatitis. HBV has a diameter of about 40nm. It infects humans and chimpanzees but there are closely related members of this family that infect other mammals and birds. HBV is a DNA virus and is enveloped.
The name is based on hepato (liver) tropic (replicates and causes infection in the liver) and DNA virus (its nucleic acid). The Hepadna virus family has the smallest genome of all replication competent animal DNA viruses. The single most important member of the family is Hepatitis B virus (HBV) .he hepadna family of viruses consists of five viruses: One human virus, hepatitis B, and four animal viruses: woodchuck hepatitis virus, ground squirrel hepatitis virus, Peking duck hepatitis virus, and other avian hepatitis viruses.