CD90 is also known as Thy-1 antigen and a member of the immunoglobulin superfamily. It may contribute to inhibition of proliferation/differentiation of hematopoietic stem cells and neuron memory formation in the CNS. It consists of a single Ig domain (112aa; 25-35 kD) inserted into the cell membrane via a GPI anchor. Expressed by hematopoietic stem cells and neurons in all species studied. Its highly expressed in connective tissue and various fibroblast and stromal cell lines, expressed on all thymocytes and peripheral T cells in mice, but in humans expressed only on small % fetal thymocytes, 10-40% of CD34+ cells in bone marrow, and <1% of CD3+CD4+ lymphocytes in peripheral circulation. It is also expressed by human lymph node HEV endothelium but not other endothelia. Lastly, it is expressed by a limited number of lymphoblastoid and leukemic cell lines. CD90 mAbs are very useful for identifying CD34+hematopoietic precursor cells in vitro. CD34+CD90+ cells include hematopoietic stem cells that can serve as autologous grafts to replace the bone marrow in patients with malignancies.
Applications:
Suitable for use in ELISA, Immunohistochemistry and Flow Cytometry. Other applications not tested.
Recommended Dilution:
Immunohistochemistry: Frozen
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.