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Activities of bovine colostral and rabbit serum antibodies recovered from the small intestine. Beagle dogs each received 50 mL bovine colostral antibody or rabbit serum antibody orally. Samples of fluid from the small intestine were collected at 1.5, 2, and 3 h after administration of antibody. Antibody activities are given in terms of absorbance, as measured by ELISA. The time 0 value represents the antibody activity before administration.
