Viruses can be defined as "non cellular , submicroscopic , obligatory intra cellular parasites composed of a proteinaceous covering around central nucleic acid ( either DNA or RNA ) and capable of self -replication within the living host cells."
The study of viruses is called virology and the specialists in the field of virology are called virologists.
Viruses exist in two states , extracellular and intracellular .
In the extracellular state , a virus is a minute particle containing nucleic acid surrounded by protein and occasionally , depending on the specific virus ,containing other macromolecular compotents.
The study of viruses is called virology and the specialists in the field of virology are called virologists.
Viruses exist in two states , extracellular and intracellular .
In the extracellular state , a virus is a minute particle containing nucleic acid surrounded by protein and occasionally , depending on the specific virus ,containing other macromolecular compotents.
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