Uptake of glucose and amino acids by fetuses in apoA-I−/−, apoA-I+/+, and apoA-Itg/tg pregnant mice. Mice at 14.5 dpc were injected with radiolabeled markers for glucose (A, C, E, G) and amino acids (B, D, F, H), and the amounts of radiolabel present in the fetuses 5 min later were measured. Data are presented as percent present in the whole fetus compared with that injected and as means ± sem (n = 4–8).