The Cell Cycle and Cancer

In the book one of the topics that was in bold print was the process of cancer. I have always known what cancer was but have never researched to the point of being educated in the topic. I have been looking over the figure on page 161 that demonstrates the process of how cancer can spread throughout the body. First it can start with a primary tumor or mutation to the skin for example and in this tumor their can be one cell that continues while the others do not. The mutation of that one cell now causes the rest of them to mutate in the same way and takes over. Now this one cell going wrong can cause this tumor to now be cancerous. Now the bad part comes and gets worse when a blood vessel is over taken by these mutated cell and the a lymphathetic vessel also. This allows the mutated cells to spread through the blood stream and spreading cancer at the same time. I do not know how much you read this Dr. Platt but I have a question. In class you said that even one cigarrette can cause a person to get cancer. So what happens when people dip? How does that process happen. How is it different than a smoker and a dipper? I understand that smoke has more harmful effects since you are filling your lungs with smoke but what does dip do?