FAS and idiopathic pulmonary fibrosis: Moreover, CMH increased CH-11 anti-human Fas mAb-mediated IPF-myofibroblast cell death (24 h, 10 μM) above that produced by treatment with the vehicle alone (4% DMSO), as shown by microscope images and trypan blue exclusion (Figure 3B,C), with 0.9–1 × 105 viable cells in control compared to only 0.3 × 105 cells following CMH.