Table 1.

Dex inhibits the binding of IL-2 to its receptor

Time of  culture, hr	IL-2R density	Negative control	Specificity control
4	584	56	31
4+dex	289	31	33
16	410	38	16
16+dex	146	27	9

Measured using biotinylated IL-2 as recommended by the manufacturer (R&D Systems). Soybean trypsin inhibitor, biotinylated to the same degree as IL-2, was used as negative control for staining. Specificity of the IL-2 biotin reaction was tested by measuring the binding after preincubation with αhIL-2 Ab.