Fig. 2From: Characterization of fatty acid desaturases reveals stress-induced synthesis of C18 unsaturated fatty acids enriched in triacylglycerol in the oleaginous alga Chromochloris zofingiensisGC–MS chromatography of fatty acids from S. elongatus expressing the empty vector pSyn6, CzFAD2, CzFAD6A or CzFAD6B. Newly synthesized fatty acids are designated in red. C17:0 was added as the internal control. The mass spectra of C16:2Δ9,12 and C18:2Δ11,14 are shown in Additional file 2: Figure S8Back to article page