PTDA

[Prothymocyte Differentiating Activity] This activity has been observed in the conditioned medium of normal human B-cells stimulated with phytohemagglutinin (Morel et al, 1992). The factor increases the number of secondary colonies generated under phytohemagglutinin and IL2 stimulation by peripheral blood-derived primary T colony cells, enhances the ability of CD4(+) but not CD8(+) peripheral blood T-cells to form agar colonies in a colony formation assay in the presence of phytohemagglutinin and IL2, and supports in vitro differentiation of CD2(-) CD3(-) ... ... ... ...
 
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