What are causes of cll?
Causes Chronic Lymphocytic Leukemia? The exact cause of most cases of chronic lymphocytic leukemia (CLL) is not known. But scientists have learned a great deal about the differences between normal lymphocytes and CLL cells in recent years. Normal human cells grow and function based mainly on the information contained in each cell’s chromosomes. Chromosomes are long molecules of DNA in each cell. DNA is the chemical that carries our genes — the instructions for how our cells function. We resemble our parents because they are the source of our DNA. But our genes affect more than the way we look. Each time a cell prepares to divide into 2 new cells, it must make a new copy of the DNA in its chromosomes. This process is not perfect, and errors can occur that may affect genes within the DNA. Some genes contain instructions for controlling when our cells grow and divide. Certain genes that promote cell growth and division are called oncogenes. Others that slow down cell division or cause ce
