2De Moraes LC, Oliveira LC, Diogo CL. et al. Immunoglobulin G subclass concentrations and infections in children and adolescents with severe asthma. Pediatr Allergy Inmmnol, 2002, 13 ( 3 ) : 195-202.
3Ros,si A, Pietrogrande MC, Dellepiane RM, et al. Salivary IgA deficiency and recurrent respiratory infections(RRI): treatment with polyvalent bacterial lysate versus placebo. Riv Inf Ped, 1994,9( 1 ) :29-34.
4Sorge G, Polizzi A.Greco F, et al. Studio clinico controllato sull' effieacia della prevenzione mediante trattamento con vaccino polimicrobico nelle infezioni dclle vie rscpiratorie. Ⅱ Medico Pediatra 1994,3(4):19 23.
5Svanborg-Eden C, Svennerholm AM. Secretory immunoglobulin A and G antibodies prevent adhesion of Escherichia coli to human urinary tract epithelial cells. Infect Immunol, 1978,22(3) :790-797.
6Pfaffenbach G, Lamm ME,Gigli I, et al. Activation of the alternative complement pathway by mouse IgA immune complexes. J Exp Med, 1982,155( 1 ) :231-247.
7Shvartsman YS, Agranovskaya EN, Zykov MP. Formation of secretory and circulating antibodies after immunization with live and in activated influenza virus vaccines. J Infect Dis, 1977,135 (5) :697-705.
8Smith D J, King WF, Taubman MA. Imtype, subclass and molecular size of immunoglobulins in salivas from young infants. Clin Exp Immunol, 1989,76 ( 1 ) : 97-102.
9Burgio GR, Lanzavecchia A, Plebani A, et al. Ontogeny of secretory immunity: levels of secretory IgA and natural antibodies in saliva. Pediatr Res, 1980,14(10) : 1111-1114.
10Carta P, Zedda S, Locci F, et al. Double-blind, randomized clinical trial of a bacterial immunomodulator in chronic obstructive bronchopncumonic infections. Int J Immunotherapy, 1994, ( 1 ) : 25-33.