NCIt definition : White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid
with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue
with azurophilic (if any) granules. Most lymphocytes can be classified as either T
or B (with subpopulations of each); those with characteristics of neither major class
are called null cells.;
Alternative definition : NCI-GLOSS: A type of immune cell that is made in the bone marrow and is found in the
blood and in lymph tissue. The two main types of lymphocytes are B lymphocytes and
T lymphocytes. B lymphocytes make antibodies, and T lymphocytes help kill tumor cells
and help control immune responses. A lymphocyte is a type of white blood cell.; CDISC: White blood cells formed in the body's lymphoid tissue. The nucleus is round
or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically
pale blue with azurophilic (if any) granules.;