Sialyllactose and sialic acid levels in plasma and urine of suckling rat pups.

<p>A) Plasma 3′sialyllactose (3SL) and B) urine 3SL and free sialic acid (NeuAc) levels were determined in pups throughout the suckling period. Mean and SD are shown (N = 6). The bar above each x-axis indicates the relative level of sialic acid in milk (low, open and high, filled).