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Capsid
The protein coat that surround the genetic material of a virus.
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Envelope
A membranous covering found on some virus capsids that allows the virus to enter a host cell by fusing with the host's cell membrane.
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Enzymes
Proteins that act as catalysts for chemical reactions.
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Genes
A unit of genetic material containing the information needed to produce and regulate a single protein.
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Lysogenic
The phase found in some viruses in which the virus's genetic material becomes incorporated into the host cell and no new viruses are produced. Compare with lytic.
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Lytic
In viruses with a lysogenic phase, the opposing phase in which virus replication takes place.