Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2091-10-14/MediaObjects/12858_2009_Article_240_Fig6_HTML.jpg)
Comparison of NAGly production in C6 glioma cells after incubation with deuterium-labeled arachidonic acid (D 8 AA) or ethanolamine moiety deuterium-labeled AEA (D 4 AEA). The products measured were arachidonoyl chain deuterium-labeled NAGly (D8NG); non-deuterium-labeled NAGly (D0NG); and glycine moiety deuterium-labeled NAGly (D2NG). + denotes an addition of the compound to the cell media for 1 hour before lipid extraction. -denotes compounds that were not present during the incubation. # p ≤ 0.05 compared to levels of D8NG in D8AA treatment group; * p ≤ 0.05 compared to levels of D2NG in D4AEA+ URB 597 treatment group; n = 6–8 per group.