NCIt definition : A cell that develops in the thymus, seemingly from a stem cell of bone marrow and
of fetal liver, and is the precursor of the thymus-derived lymphocyte (T lymphocyte)
that effects cell-mediated (delayed type) sensitivity.;
Alternative definition : NCI-GLOSS: A type of immune cell that can attack foreign cells, cancer cells, and
cells infected with a virus. Thymocytes can also help control immune responses. A
thymocyte is a type of white blood cell.;