Effect of dietary ALA levels on (A) plasma and (B) liver phospholipid fatty acid content in rats fed diets containing various levels of ALA ranging from 0.2 to 2.9%en for 3 weeks. Fatty acids include EPA (circles), DPA (open triangles), DHA (closed triangles) and AA (open squares). Reprinted from Tu et al. (2010). AA, arachidonic acid; ALA, alpha‐linolenic acid; DHA, docosahexaenoic acid; DPA, Docosapentaenoic acid; EPA, eicosapentaenoic acid; LCPUFA, long‐chain polyunsaturated fatty acids.