Figure 2. SIM (ion 217 m/z) GC/MS analysis of Z9-unsaturated fatty acid methyl esters (DMDS adducts) from L8-14C yeast cells complemented with YEpOLEX-Cro-FB1 plasmid. Desaturase is labeled Cro-Z9(16) because it produces Z9-16:Acid>Z9-18:Acid.