NAC Inhibits Va14iNKT Cell Activation Figure 2. Effect of NAC treatment on intrahepatic Va14iNKT cell activation during agonistic Fas mAb-induced FLF. Representative FACS histograms of extracellular CD25 (a), intracellular IFN-c (d), intracellular TNF-a (e; aGalcer used as a positive control) and intracellular active PLoS ONE | www.plosone.org 5 June 2012 | Volume 7 | Issue 6 | e38051