ELOVL2 and neoplasm: On the other hand, analysis of mouse xenografts using BE(2)-C cells that stably expressed ELOVL2 showed that compared to the GFP control group, the enforced ELOVL2 expression group had a significantly reduced tumor volume (Fig. 4d and e), mass (Additional file 6: Figure S6B) and an increased DHA content (Fig. 4f).