CD30L triggers growth arrest in two ALCL cell lines.

<p>Karpas-299 (K-299) or Michel cells were incubated alone, with control (human IgG) or CD30L for (A) 24 hours and DNA content determined by propidium iodide staining; numbers indicate the percentage of cells in G₀/G₁ (left) or S-phase (right), or (B) 72 hours with [³H]-thymidine added for the final 16 hours. Bar graphs show the mean (+/−SEM) percentage of [³H]-thymidine uptake from triplicate wells in control or CD30L-stimulated cells; data are expressed as a percentage of [³H]-thymidine-uptake relative to untreated cells (normalised to 100%) and are representative of at least 3 independent experiments.