Mention any two examples of oncogenic viruses. Make a flow-chart to show the steps involved in cellular transformation by a RNA tumor virus.

Oncogenic viruses are a subset of viruses capable of inducing cancer in their host cells. They achieve this by integrating their genetic material into the host cell's DNA, disrupting normal cellular processes, and promoting uncontrolled cell growth. Two well-known examples of oncogenic viruses are the Human T-cell leukemia virus type 1 (HTLV-1) and the Hepatitis B virus (HBV).

### Oncogenic Viruses: HTLV-1 and HBV

1. HTLV-1 (Human T-cell Leukemia Virus Type 1):
   - HTLV-1 belongs to the family Retroviridae and primarily infects T cells.
   - It contains RNA as its genetic material and utilizes the enzyme reverse transcriptase to convert its _____ _____ __________ ____ ___.
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