The dermis, the skin's next layer, is a thick layer of fibrous and elastic tissue (made mostly of collagen, with a small but important component of elastin) that gives the skin its flexibility and strength. The dermis contains nerve endings, sweat glands and oil (sebaceous) glands, hair follicles, and blood vessels.
âAll cancers are caused by genetic mutations, and in some cases we know the processes driving them, for example, tobacco smoking in lung cancer, however, our understanding of the causes of mutation in most cancers is remarkably limited,â Grimmond says.
What Really Causes Cancer. Most people think that DNA damage is what causes a cell to be cancerous. While it is true that cancer cells may have DNA damage, it is highly unlikely that DNA damage can cause any cell to become cancerous. In fact, the DNA damage is a result of the true cause cancer. So let us discuss what really causes cancer. There have been many discoveries about cancer in the past 125 years. For example, William Russell (1852-1940), in 1890, discovered that there are microbes inside and outside of cancer cells.