T cell differentiation gamma-delta T cell differentiation biological_process gamma-delta T lymphocyte differentiation gamma-delta T cell development 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:0042492 gamma-delta T-lymphocyte differentiation gamma-delta T-cell differentiation The process in which a relatively unspecialized hemopoietic cell acquires specialized features of a gamma-delta T cell. A gamma-delta T cell is a T cell that expresses a gamma-delta T cell receptor complex. gamma-delta T cell activation