Cohort and case-control studies have linked exposure to some and to the development of some forms of leukemia.
A large group of people with CLL have low-grade disease, which does not benefit from treatment.
 It's important to know your subtype since it plays a large part in determining the type of treatment you'll receive.
When needed, we also use biopsies to confirm the presence of a particular infection, then prescribe fungicidal, antibiotic or antiviral drugs to resolve those conditions.
They generally do not fight infection as well as normal white blood cells do.
International Journal of Hematology.