Non-Hodgkin lymphoma is broadly divided into two major groups: B-cell lymphomas (which develop from abnormal B-lymphocytes, which is most common), and T-cell lymphomas (which develop from abnormal T-lymphocytes). Lymphocytes are a type of white blood cell that helps the body fight infections.
The atomic number of radon (Rn) is 86 and the atomic weight of Rn is 222 grams/mole.
Radon is a radioactive noble gas. It does not currently have any common industrial uses, but is sometimes used for hydrologic research on the interaction between groundwater and surface streams. Another noble gas, Krypton, has two uncommon naturally occuring radioisotopes, Kr-81 and Kr-85.