CD137 inhibits proliferation and induces cell death of MM but not of non-MM cells.

<p>Cells were cultured on plate-bound Fc or CD137-Fc protein or on uncoated plates (PBS). (A) After indicated times proliferation was determined via ³H-thymidine incorporation. (B) Cell viability was determined after 24, 48, 72 and 96 h via trypan blue staining. Depicted are means ± standard deviations of triplicate measurements. * p<0.05. This experiment is representative of three independent experiments with similar results.