Evidence for the essentiality of arachidonic and docosahexaenoic acid in the postnatal maternal and infant diet for the evelopment of the infant’s immune system early in life Long-chain polyunsaturated fatty acids (LCPUFA), especially the balance between arachidonic (AA) and docosahexaenoic (DHA) acids are known to have important immunomodulatory roles during the postnatal period when the immune system is rapidly developing....