Fetal parameters on gestational d 20. A, Fetal weights in the left- and right-uterine horns across all groups. P = n.s. for difference between sides, n = 138–172 fetuses per side (from 23 mothers). B, Placental weights in the left- and right-uterine horns across all groups. *, P < 0.005, n = 138–172 fetuses per side (from 23 mothers). C, Fetal weight by treatment group. *, P < 0.0005 vs. CON and INS, n = 72–155 fetuses per group (from six to 11 mothers per group). D, Placental weights by treatment group. *, P < 0.01 vs. CON and DEX, n = 72–155 fetuses per group (from six to 11 mothers per group).