Fig. 4From: 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, CzFAD5A, CzFAD5B or CzFAD5C. Newly synthesized fatty acid is designated in red. The mass spectra of C16:1Δ7 are shown in Additional file 2: Figure S8Back to article page