Fas/Fas ligand and hematopoietic progenitor cells.


Fas antigen is a receptor that crosslinks with a ligand or antibody initiating a signal transduction cascade that leads to apoptosis. During normal hematopoiesis, Fas antigen is not expressed on CD34+ cells, including premature hematopoietic progenitor cells. Functioning Fas antigen expression is induced by several hematopoietic regulators. These changes… (More)


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