Vaerman, J.-P., Pierre, P., & De Ryck-Langendries, A. (1987). Secretory IgA anti-cholera toxin antibodies in rat serum after intestinal immunization and bile duct ligation. Advances in Experimental Medicine and Biology, 216B, 1661-1668. https://hdl.handle.net/2078.5/132533 (Original work published 1987)