cytolysin |
cytolytic differentiation factor |
parathyroid hormone-like related protein |
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abbr. CDF (a term with multiple meanings). also abbr. CTL differentiation factor (cytolytic T-lymphocyte differentiation factor).
This is an operational definition of biological activities secreted by stimulated mononuclear cells that promote the development of precursor cells for thymocytes into killer cells expressing the surface antigen CD8. One of the known factors with CDF activity is identical with IL6 and there may be others showing the same activity.
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