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Cancer Warrior
How Cancer Grows
4. Spread and second mutation
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Spread

The genetically altered cells have, over time, reproduced unchecked, crowding out the surrounding normal cells. After a period of ten years, the growth may contain one million cells and be the size of a pinhead. At this point the cells continue to look the same as the surrounding healthy cells.

After about a million divisions, there's a good chance that one of the new cells will have mutated further. This cell, now carrying two mutant genes, could have an altered appearance and be even more prone to reproduce unchecked.

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1. DNA of a normal cell | 2. Mutation of DNA | 3. Genetically altered cell | 4. Spread and second mutation | 5. Third mutation | 6. Fourth mutation | 7. Breaking through the membrane | 8. Angiogenesis | 9. Invasion and dispersal | 10. Tumor cells travel | 11. Metastasis


Dr. Folkman Speaks | Cancer Caught on Video
Designing Clinical Trials | Accidental Discoveries | How Cancer Grows
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