- Virus - Wikipedia
It can be a virus that is isolated from its natural reservoir or isolated as the result of spread to an animal or human host where the virus had not been identified before
- Virus | Definition, Structure, Facts | Britannica
Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria Viruses possess unique infective properties and thus often cause disease in host organisms Learn about the history, types, and features of viruses
- Viruses: Definition, Types, Characteristics Facts
A virus is a small piece of genetic information in a “carrying case” — a protective coating called a capsid Viruses aren’t made up of cells, so they don’t have all the equipment that cells do to make more copies of themselves
- Virus - National Human Genome Research Institute
A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat A virus cannot replicate alone; instead, it must infect cells and use components of the host cell to make copies of itself
- VIRUS中文 (简体)翻译：剑桥词典 - Cambridge Dictionary
A computer virus may lurk unseen in a computer's memory, calling up and infecting each of the machine's data files in turn The virus deletes files and corrupts essential core microchips leaving computers unusable
- What Is a Virus? Definition, Structure, and How Viruses Work
When a virus enters the body, the innate immune system reacts first This non-specific defense includes barriers like skin, as well as cells that engulf and destroy invaders
- Viruses: Definition, Structure, Classification - PMC
The infectious virus particles, or virions, are composed of proteins and are surrounded in some species of viruses by a lipid membrane, which is referred to as an envelope; the particles contain only one kind of nucleic acid, either DNA or RNA
- virus | Learn Science at Scitable - Nature
A virus is an infectious agent that can only replicate within a host organism Viruses can infect a variety of living organisms, including bacteria, plants, and animals
|