Azerbaijan currently has diplomatic relations with 160 countries: Afghanistan, Bahrain, Belarus, Belgium, Bulgaria, Canada, the People's Republic of China, Denmark, Egypt, France, Georgia, Germany, Greece, Hungary, Iran, Iraq, Republic of Ireland, Israel, Italy, Japan, Kazakhstan, Kyrgyzstan, Kuwait, Libya, Luxembourg, Mexico, Moldova, Mongolia, ...
Most basal cell and squamous cell skin cancers are caused by repeated and unprotected skin exposure to ultraviolet (UV) rays from sunlight, as well as from man-made sources such as tanning beds. UV rays can damage the DNA inside skin cells.DNA is the chemical in each of our cells that makes up our genes.esearchers donât yet know all of the DNA changes that result in skin cancer, but they have found that in many skin cancers the cells have changes in tumor suppressor genes. The gene most often altered in squamous cell cancers is called TP53. This tumor suppressor gene normally causes cells with damaged DNA to die.
Cumulative exposure to sunlight causes most cases of squamous cell carcinoma. Frequent use of tanning beds also multiplies the risk of squamous cell carcinoma; people who use tanning beds are 2.5 times more likely to develop squamous cell carcinoma than those who donât. But skin injuries are another important source.