CD5 (Lymphocyte antigen T1/Leu 1, p56 62, T cell surface glycoprotein CD5, T1) (FITC)

May be stored at 4 degree C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 degree C. Aliquots are stable for 12 months after receipt at -20 degree C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer. FITC conjugates are sensitive to light.

Reacts with CD5 antigen (MW 67kD). LT1 completely cross block binding of MAbs Leu 1 and OKT1. Working dilution: 1:5,000. LT1/CD5 is present on the majority of human T-cells. This antigen is also found on the neoplastic cells in all cases of B cell chronic lymphocytic leukaemia, but is not present on normal B cells or on other cell populations.