Viruses
Which of the following oncogenic viruses was first detected?

Human T cell leukaemia virus
Herpes simplex virus type 2
Rous sarcoma virus.
Epstein-Barr virus

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Viruses
The oncogene theory refers to

how viruses transform normal cells into tumor cells
none of these
how chemicals inactivate viruses when applied
how viruses replicate in host cells

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