Columbia subject headings:
Cell transformation.
Genetic recombination.
Oncogenic viruses.
RNA viruses.
Viral genetics.
Harvard subject headings:
Cell transformation.
Genetic recombination.
Oncogenic viruses.
Retroviruses.
Viral genetics.
Princeton subject headings:
Cell transformation.
Genetic recombination.
Oncogenic viruses.
RNA viruses.
Viral genetics.