1. Present study
2. This work was supported by the Norwegian Cancer Society and by Anders Jahre's Fund
3. The humoral immune systems of human gastrointestinal tract;P, I.Brandtzaeg;Monogr Allergy,1981
4. The mucosal defense system;Hanson, L.A.; Brandtzaeg, P.,1980
5. chain and secretory component in receptor-mediated glandular and hepatic transport of immunoglobulins in man;of J, Brandtzaeg P.Role;Scand J Immunol,1985