Haematoxylin and eosin-stained sections of perirenal fat from a representative fetus from a control and an undernourished pregnancy (both females) with unilocular and multilocular fat cells highlighted (a and b), and relationships between perirenal unilocular fat mass and percentage of fat in the carcass (c, r=0.806, P=0.001), and between fetal weight and multilocular fat mass (d, r=0.605, P=0.022) at day 130 of gestation in fetuses from control (□) and undernourished (■) adolescent dams.