. "The process in which a precursor cell type acquires characteristics of a more mature T-cell. A T cell is a type of lymphocyte whose definin characteristic is the expression of a T cell receptor complex." . . . "T cell differentiation" . "T cell development" . "T lymphocyte differentiation" . "T-cell differentiation" . "T-lymphocyte differentiation" . . . . . . . . . . . . . . . .