Cancer Activated oncogenes transform normal cells into cancerous cells. Transformed cells have increased growth,loss of contact inhibition,tumor specific transplant and T antigens. The genetic material of oncogenic viruses becomes integrated into the host cell's DNA. • Activated oncogenes transform normal cells into cancerous cells. • Transformed cells have increased growth, loss of contact inhibition, tumor specific transplant and T antigens. • The genetic material of oncogenic viruses becomes integrated into the host cell's DNA. Cancer