[14C]-OA secretion into lipid classes in FABP1 knockdown and control cells after incubation at different times. After apical incubation with 100 µM [14C]-OA complexed with TC for 2 (A) and 390 (B) min, basolateral medium was recovered, and lipids were extracted and separated by TLC. Lipid spots corresponding to different classes were scraped, and their radioactivity was quantified. Radioactivity incorporated in each lipid fraction is expressed as percentage of total radioactivity incorporated. CE, cholesteryl esters; TG, triacylglycerols; FFA, free fatty acids; DG, diacylglycerols; MG, monoacylglycerols; PL, total phospholipids. Results are means ± SEM, n=3, * P < 0.0167 versus control.