Lutein (A) and zeaxanthin (B) concentrations in each retina region of infant rhesus
monkeys either BF (n = 8), SF (n = 8), or UF
(n = 7) for 6 mo. Values are means ± SDs. Labeled means for each
tissue without a common letter differ, P < 0.05, by Welch's
ANOVA followed by Dunnett's T3 pairwise post-hoc tests. BF, breastfed; conc,
concentration; SF, supplemented formula-fed; UF, unsupplemented formula-fed.