Fig. 3.

Protein abundance of cAMP response element-binding protein (CREB) and phosphorylated CREB at Ser¹³³ in singleton and twin fetuses in late gestation. A and B: CREB protein abundance was lower in the PCUN and PIUN groups compared with controls in singletons (A), but there was no difference in either treatment groups in twins (B). C: the protein abundance of phosphorylated CREB (Ser¹³³) was lower in the PCUN and PIUN groups compared with controls in singletons and twins. Different letters denote significant differences between treatment groups.