In this article we will discuss about the structure and replication of pox viruses. Structure of Pox Viruses: Oval or brick-shaped 200-400 nm long particles can be visualized by the best light microscopes. The external surface is ridged in parallel rows, sometimes arranged helically (Fig. 17.17). Viral particles (virions) are generally enveloped (external enveloped virion-EEV). The intracellular mature virion (IMV) [...]
The following points highlight the six main stages involved in the replication of animal viruses. The stages are: 1. Adsorption 2. Penetration 3. Un-Coating 4. Replication of Viral Genome 5. Synthesis and Assembly of Virus Capsids 6. Release of New Virus. Stage # 1. Adsorption: Adsorption to the host cell surface is the first step in reproduction cycle of animal [...]
In this article we will discuss about:- 1. Meaning of Poliovirus 2. Morphology of Poliovirus 3. Replication 4. Cultivation. Meaning of Poliovirus: Poliovirus is a member of the enterovirus subgroup, family Picornaviridae. Picornaviruses are small, ether- insensitive viruses with an RNA genome. There are three poliovirus serotypes: serotype 1, 2, and 3. Serotype 1 is the common epidemic type, serotype [...]