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 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 [...]
In this article we will discuss about:- 1. Origin of Simian Virus 40 2. Organisation of Simian Virus 40 3. Replication. Origin of Simian Virus 40 (SV40): Simian virus 40 (SV40) belongs to polyomavirus family, the family of viruses that induce tumours in animals; indeed, the suffix oma means tumour. Simian virus 40 was first isolated from monkeys hence so [...]