results in acquisition of features of results in acquisition of features of T cell lymphocyte differentiation cell differentiation T cell differentiation Note that the term 'thymocyte differentiation' was merged into this term because thymocytes are T cells, and thus the term was essentially redundant. Note that immunologists typically use the word 'development' to refer to cells of B or T cell lineages undergoing the process that GO describes as 'cell differentiation'. GO:0030217 GO:0042112 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-lymphocyte differentiation GO:0046652 T cell development T lymphocyte differentiation T-cell differentiation biological_process T cell activation