Human ST2L FITC conjugated monoclonal antibody (Clone: B4E6, Host / Isotype Subclass: Mouse IgG1), for the identification and purification of human type 2 lymphocyte (Th2) subsets.
 
T1/ST2 (also known as IL-1 R4 or IL-33Ra) is a transmembrane glycoprotein expressed on mast cells and Th2 cells. It is a selective marker for human Th2 lymphocytes and plays a role in regulating inflammatory responses. IL-33 is a recently identified member of the IL-1 family of cytokines and is involved in Th2 mediated immune responses. IL-33 mediates its biological effects via T1/ST2 binding. The roles of IL-33 and T1/ST2 (IL-33Ra) have been investigated in many immune responses such as allergy, asthma, rheumatoid arthritis and osteoarthritis.

References/Citations:

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IL-33 Induces Antigen-Specific IL-5+ T Cells and Promotes Allergic-Induced Airway Inflammation Independent of IL-4
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Cornelis van ‘t Veer et al., J. Immunol., Nov 2007; 179: 7110 - 7120.The vast majority of CLA+ T cells are resident in normal skin.
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Changes in systemic type 1 and type 2 immunity in normal pregnancy and pre-eclampsia may be mediated by natural killer cells Borzychowski, A.M. et al., Eur J Immunol (2005) 35:3054-3063. Atherosclerotic Abdominal Aortic Aneurysm and the Interaction Between Autologous Human Plaque-Derived Vascular Smooth Muscle Cells, Type-1 NKT, and Helper T-Cells Chan, W.L. et al., Circ Res (2005) 96:675-683NKT cell subsets in infection and inflammation Chan WL, et al. Immun Lett (2003) 85:159-163

Regulation of ST2L expression on T helper (Th) type 2 cells Carter, R.W. et al., Eur. J. Immunol. (2001) 31:2979-2985Human IL-18 Receptor and ST@L Are Stable and Selective markers for the Respective Type 1 and Type 2 Circulating Lymphocytes Chan WL, et al. J Immunol. 2001 Aug 1; 167(3):1238-44.