In this article we will discuss about:- 1. Meaning of Retroviruses 2. Structural Organization of Retroviruses 3. Genomic Organization 4. Replication. Meaning of Retroviruses: Retrovirus is a virus containing RNA genome that replicates through a DNA intermediate. The term "retro" means "backward" and the name "retrovirus" is derived from the fact that these viruses transfer information backward from RNA to [...]
In this article we will discuss about:- 1. Habitat of Hepatitis B Virus 2. Morphology of Hepatitis B Virus 3. Replication 4. Cultivation and Stability. Habitat of Hepatitis B Virus: Hepatitis B (serum hepatitis) is caused by hepatitis B virus (HBV) belonging to family Hepadnaviridae (heptotropic DNA viruses) and to genus Orthrohepadnavirus. Under the electron microscope, sera from hepatitis B [...]
In this article we will discuss about the morphology and replication of Influenza Virus. Morphology of Influenza Virus: Influenza virus (Fig. 14.18) is pleomorphic and its diameter is 80- 120 nm. It is an enveloped virus possessing genome segmented into eight linear single- stranded molecules ranging in size from 890 to 2341 nucleotides. The nucleocapsid of this virus is of [...]