Maternal DHA accretion through pregnancy and lactation is affected by Elovl2 genotype and dietary DHA. Proportion of DHA (22:6n-3) in the liver (A), serum (B), mammary glands (C), and WAT (D) of Elovl2+/+ (+/+), Elovl2+/− (+/−), and Elovl2−/− (−/−) mothers and control females fed either control diet (Control) or DHA-enriched diet (DHA) expressed as percent of total fatty acids. For the percent of remaining fatty acids, see respectively, supplemental Tables S16–S19. Results are presented as mean ± SEM of two to five mice. #Represents a log2 absolute fold change >1 between control (Control) and DHA-enriched (DHA) diet, unless specified.