This means that there is too short of a waiting period between successive divisions. A cell's existence is thought of as cyclic and we speak about a cell cycle. The cell cycle is the time between successive divisions. Different tissues in our body have cells with different lengths of cycle. Mature nerve cells never divide Mature muscle cells don't divide either 1.
Cancer cells can go into a quiescent stage, then start dividing again.
They aren't regulated. B. Not only do cancer cells divide more than normal in a certain time period, they also have a greater than normal absolute number of divisions. Pick a type of cell that doesn't divide super fast. You put it into culture and give it all the nutrients it wants and let it divide until it fills the culture dish. Then you take one of the cells out of this culture dish and start a new culture, again with all the nutrients the cell wants.