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The MRC OX-44 antigen marks a functionally relevant subset among rat thymocytes.
The Journal of Experimental Medicine
|January 1, 1987
Summary
A new antibody, MRC OX-44, identifies functionally active myeloid and lymphoid cells in rats. This antibody marks most thymocytes involved in proliferation and thymopoiesis, suggesting it targets key immune cells.
Area of Science:
- Immunology
- Cell Biology
Background:
- Monoclonal antibodies are crucial tools for identifying and characterizing cell populations.
- The thymus is a primary lymphoid organ essential for T-cell maturation.
Purpose of the Study:
- To characterize the reactivity of the MRC OX-44 monoclonal antibody in the rat immune system.
- To investigate the functional role of OX-44 positive cells within the thymus.
Main Methods:
- Flow cytometry was used to analyze cell surface marker expression.
- Functional assays, including proliferation and thymopoiesis studies, were performed.
Main Results:
- MRC OX-44 antibody labels myeloid cells, peripheral lymphoid cells, and a subset of thymocytes.
- OX-44 expression is inversely correlated with CD4 and CD8 expression in thymocytes.
- OX-44 positive thymocytes are responsible for all observed proliferation and thymopoiesis activity.
Conclusions:
- The MRC OX-44 antibody identifies a population of functionally significant cells within the rat thymus.
- This antibody may serve as a marker for functionally relevant thymocytes involved in immune responses.