Placental expression of mRNA for molecules associated with fetal growth. A, IGF-I mRNA expression. B, IGF-II mRNA expression. C, IGFBP-1 mRNA expression. D, IGFBP-2 mRNA expression. E, GLUT-1 mRNA expression. F, GLUT-3 mRNA expression. WT placentas are indicated by the closed columns, and Tg placentas are indicated by the open columns. Comparisons were made by the unpaired Student’s t test.