That compared with weight gain of 36 milligrams a day in mice transplanted through the hepatic vein and 58 milligrams in controls.

WSJ: Cow's Milk Blamed for Too Many Infant Allergies

Two injection sites were used: the surface of the small intestine and the hepatic portal vein that connects the pancreas and the liver, where islet transplantation normally is performed.

WSJ: Cow's Milk Blamed for Too Many Infant Allergies