- 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
- 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: What are they, and what do they do? - Medical News Today
After entering a host cell, a virus hijacks the cell by releasing its own genetic material and proteins into the host It uses the host’s cellular machinery to make many copies of itself
- 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 - Definition, Structure, Classification, Examples | Biology . . .
A virus is a chain of nucleic acids (DNA or RNA) which lives in a host cell, uses parts of the cellular machinery to reproduce, and releases the replicated nucleic acid chains to infect more cells
- Introduction to viruses - Wikipedia
When a virus infects a cell, the virus forces it to make thousands more viruses It does this by making the cell copy the virus's DNA or RNA, making viral proteins, which all assemble to form new virus particles
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