T Follicular Helper Cells

**Definition:** A specialized subpopulation of CD4+ T cells involved in formation of GERMINAL CENTER. Tfh cells are mostly located in secondary lymphoid organs, e.g., TONSIL; SPLEEN and LYMPH NODES. They are CD4 ANTIGEN; CD45 ANTIGEN; B-CELL LYMPHOMA 6 PROTEIN; CXCR5 RECEPTORS; ICOS INDUCIBLE T-CELL CO-STIMULATOR; and PD1 RECEPTOR positive.

**Tree numbers:** - A11.118.637.555.567.550.500.400.450 - A11.118.637.555.567.569.200.400.450 - A11.118.637.555.567.569.500.400.450 - A15.145.229.637.555.567.550.500.400.250 - A15.145.229.637.555.567.569.200.400.250 - A15.382.490.555.567.550.500.400.450 - A15.382.490.555.567.569.200.400.450 - A15.382.490.555.567.569.500.400.450

**Synonyms:** - Tfh Cells - Follicular B Helper T Cells - Follicular Helper T Cells