title: Determination of double bond positions in polyunsaturated fatty acid methyl esters by combined gas chromatography-chemical ionization mass spectrometry.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D005231:Fatty Acids, Unsaturated; D013058:Mass Spectrometry / Q000379:methods; D013329:Structure-Activity Relationship
chemical_list: D005231:Fatty Acids, Unsaturated