The cancer spreading cells may be due to an awakening of the sleeping body in the embryonic development-related transcription factor induced.
In general, the transferred cancer cells will be divided into several stages: the first stage, known as a violation of this stage in cancer epithelial cells release the connection between cancer cells, making cancer cells "freed" and be able to move to other places. The second stage, known as infiltration within the cancer cells through the blood vessels or lymphatic endothelium into the circulatory system. The third stage, known as extravasation, at this stage which, after a trip to the baptism of the survivors of the circulatory system will be through the microvascular endothelial cells to reach the others. The final stage is the New World migration of these cancer cells, among other organizations, the formation of the transfer of robust proliferation of malignant tumor.