IL-2 production (a) and cytokine production; (b) by mesenteric lymphocytes after ex vivo stimulation with Concanavalin A (ConA) from lactating dams fed Control (100% FC) (n = 6), Mixed Choline (MC; 50% PC, 25% FC, 25% GPC) (n = 6) or High GPC (HGPC; 75% GPC, 12.5% PC, 12.5% FC) (n = 6) diets. FC, free choline; GPC, glycerophosphocholine; PC, phosphatidylcholine. Values are presented as mean ± SEM. p value of the main effect of diet analyzed by one-way ANOVA. Multiple comparisons between diet groups have been performed with Duncan adjustment. Means within a row that do not share a common superscript letters a, b are significantly different (p < 0.05).