The condition of having abnormally low numbers of certain white blood cells called lymphocytes. See also -penia.
a decrease in the number of lymphocytes (see above) in the blood.
Below normal levels of the specific white blood cells, the T-cells and the B-cells.
Lymphocytopenia refers to a lower than normal level of lymphocytes. Lymphocytes are a white blood cell with important functions in the immune system.