Fish oil & flaxseed oil are a rich source of this class of essential fatty acids
... (
More information); Randomized controlled trials have found that fish oil .... A 
second class of SPMs, the R-series, is generated from the aspirin-dependent 
acetylation... [DOC] [TLE] Essential Fatty Acids and Skin Health - Linus Pauling Institute [PAR] (More information); Consuming oils rich in n-6 and n-3 fatty acids can alter the 
fatty acid ...