Distribution of mucosal IgA and IgG subclass-producing immunocytes and alterations in various disorders. - Brandtzaeg,P.; Kett,K.; Rognum,T.O.; Söderström,R.; Björkander,J.; Söderström,T.; Petrusson,B.; Hanson,L.Å. (Monogr Allergy, 1986)