FASLG and congestive heart failure: When incubated with 100 ng/ml of CD95L for 12 hrs, Treg cells prepared from CHF patients showed higher percentages of cells undergoing CD95L-induced apoptosis than in non-CHF subjects (non-CHF vs. CHF patients: 19.43±6.87% vs. 36.52±12.03%, p<0.01; Figure 5D).