Relationship between estimates of OA and AA formation. Relationship between relative amounts of OA and AA (Panel A) in breast muscle lipids of chickens fed various diets containing linseed oil, pooled data analysis (see Methods). Panel B: association between estimates of OA and AA synthesis, i.e. product/precursor ratios. Panel C: Relationship between % AA and product/precursor estimate of OA synthesis. Panel D: relationship between % OA and product/precursor estimate of AA formation from LA. OA = oleic acid (18:1 n9); Stear = stearic acid (18:0); AA = arachidonic acid (20:4 n6); LA = linoleic acid (18:2 n6). Note broken axes. Coefficients of correlation in panels A, B, C, and D were: -0.936 (p < 0.001), -0.856 (p < 0.001), -0.859, p < 0.001), and -0.884, p < 0.001), respectively. When analyzing the same relationships in each of the diet subgroups (see Methods) separately, we obtained highly significant correlation coefficients (r > 0.8; p < 0.001) in all subgroups.