Vectors Uses for Animal Cell Culture
Recombinant adeno virus can be created by deleting E1A/E 1B genes that are

transcriptional regulators and are essential for viral replication
important for packaging of viral DNA into viral head
coding for virus coat protein
not necessary for viral replication

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Vectors Uses for Animal Cell Culture
Retroviruses have advantage for being used as vector for animal cells because

All of these
they cover a wide host range
infection does not lead to cell death, infected cells produce virus over an indefinite period
viral gene expression is driven by strong promoters

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