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Virology and its importance:

Study of biology of viruses, and viral diseases, genetic material parasitic particles, virus agents and submicroscopic including the distribution, evolution and clinical aspects of viruses is called Virology which is considered to be a subfield of microbiology. Virology is a major branch that deals with virus classifications and causes which ranges in size for about 30 nm to about 450 nm, through which most of the virus cannot be seen with light microscopes.

The virus with the name Bacteriophages, which infect bacteria, can be relatively easily grown as viral plaques on bacterial cultures. In the process known as transduction these Bacteriophages move genetic material from one bacterial cell to another and this horizontal gene transfer is one reason why they play as a major research tool in the early development of molecular biology with the infectious diseases. The function of ribozymes, the genetic code, the first recombinant DNA and early genetic libraries were all arrived at using bacteriophages. The presence of viruses could be grown easily in culture that infect bacteria (bacteriophages); can lead to an explosion of virology research.  



Easily grown viruses are Plant viruses and bacteriophages, whereas animal viruses normally require a living host animal, which complicates their study extremely. For example: In the production of vaccines Influenza virus could be grown in fertilized chicken eggs. As per previous experiments a vaccine is being produced from an attenuated virus strain by growing yellow fever virus in chicken eggs; which saved millions of lives and is still being used today.

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