Enrichment of Glu, [M+6]glucose; Glycer, [M+3]glycerol; Lact, [M+3]lactate, and [M+2] in different FA in plasma (left) and milk (right) during infusion of [U-13C]glucose following overnight fast (top) and during feeding (bottom) of high-carbohydrate/low-fat (H-CHO) and low-carbohydrate/high-fat (H-FAT) diets. Values are means ± SE; n = 7. Significantly different from H-CHO (paired t-test): *P < 0.05, **P < 0.01.