IL-13 receptor expression on AIDS-KS cells.

AIDS-KS (1.0 × 10⁶) were incubated with¹²⁵I-IL-13 (500 pmol/L) with increasing concentrations (0 to 200 nmol/L) of unlabeled IL-13 for 2 hours at 4°C. The displacement curves (upper panels) and scatchard analyses (bottom panels) were generated from the binding data using LIGAND program.29