A classification of T-lymphocytes, especially into helper/inducer, suppressor/effector, and cytotoxic subsets, based on structurally or functionally different populations of cells.

Synonyms: T-Lymphocyte Subset, Subset, T-Cell, T-Lymphocyte Subsets, Subsets, T-Lymphocyte, T-Cell Subsets, Subsets, T-Cell, T-Cell Subset, T Cell Subsets, T Cell Subset, T Lymphocyte Subsets, Subset, T-Lymphocyte, T Lymphocyte Subset