Explain about the RNA Viruses - carcinogenic?
All oncogenic RNA viruses are retroviruses. They are of 2 types. They are acute transforming retroviruses and slow transforming retroviruses. Acute transforming viruses include type C viruses and cause rapid induction of tumors in animals. They contain viral oncogenes (virus). The slow transforming retroviruses do not contain V-ones and are replication competent and cause transformation of the cells slowly.