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2. Is there an enteropancreatic circulation of digestive enzyme? – reply;Rosenblum;Am J Physiol,1983
3. Is there an enteropancreatic circulation of digestive enzyme?;Rohr;Am J Physiol,1983
4. No evidence for the presence of β-casomorphins in human plasma after ingestion of cows' milk or milk products
5. Intestinal uptake of macromolecules 5. Comparison of in vitro uptake by rat small intestine of antigen-antibody complexes prepared in antibody or antigen excess;Walker;J Immunol,1976