For comparison, the mean TF concentration for the pleura-derived SCLC cell lines was 41.8 ± 8.0 ng/L (range: 31.5 ng/L–51.3 ng/L) and the mean TF for 7 pleura-derived NSCLC lines was 3,832 ± 2,650 ng/L (range 1,105.4 ng/L–8,860.5 ng/L; not shown), respectively. The gene discussed is TF; the disease is small cell lung carcinoma.