The viral RNA enters the nucleus where replication occurs by the viral RNA polymerase. 

University of Southern Mississippi

Lytic animal viruses follow similar infection stages to bacteriophages: attachment, penetration, biosynthesis, maturation, and release But the mechanisms of penetration, nucleic-acid biosynthesis, and release differ from bacterial viruses in that animal viruses enter through endocytosis, and utilize tissue tropism

Animal Replication

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The virus attaches to the specific host cell receptor within specific tissues of the host using tissue tropism.

Attachment of Animal Viruses

Nucleic acid biosynthesis of Animal Viruses

The virus penetrates the cell through endocytosis where the virus is swallowed by the host cell this allows the fusion and uncoating of the viral RNA to be released through biosynthesis.

Penetration of Animal Viruses

The viral mRNA is assembled to produce viral proteins. 

Maturation of Animal Viruses

The viral particles are relased in to the extraceullar environement from the host cell which is not destroyed in the process so that it can continue making new viral particles for infection. 

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