Fig. 1From: Dietary supplementation with 0.4% L-arginine between days 14 and 30 of gestation enhances NO and polyamine syntheses and water transport in porcine placentaePlacental blood vessels in the allantois on d 30 of gestation in gilts supplemented with either 0 (control) or 0.4% L-arginine. Placental blood vessels are shown in the allantois of gilts without L-arginine supplementation (control; Panel A) and gilts receiving dietary supplementation with 0.4% L-arginine (Panel B)Back to article page