Lymphocyte numbers in the blood are used to evaluate the immune status on a daily basis
in medicine. Several studies have documented the normal ranges of lymphocytes and
lymphocyte subsets in the peripheral blood. A variety of techniques and criteria have
revealed clear differences between the lymphocyte subsets in childhood and adolescence.
Race and gender are also variables for blood lymphocytes, and even environmental factors
seem to influence the numbers of some lymphocyte populations. However, do all these …