Distribution of different trans-18:1 isomers in adipose tissue from ovariectomized mice fed the control diet (TFA-CON) or that with 5% fat as partially hydrogenated linseed oil (PH-LIN), partially hydrogenated safflower oil (PH-SAF), partially hydrogenated sunflower oil (PH-SUN), or 2.7% conjugated linoleic acids (c9,t11/t10,c12 CLA). Mice were ovariectomized at 21 days and fed the experimental diets from 22 days of age until euthanasia at 42 days of age. Fatty acid methyl esters from (a) epithelium-free mammary fat pad and (b) omental fat were analyzed by gas-liquid chromatography. X-axis indicates position of trans double bond of 18:1 fatty acids. Data are mean ± SEM (n = 4–5/diet). a b c dMeans with different letters are different (P < 0.05) for a given isomer