3Zero D T, Creeth J E, Bosma M L, et al. The effect of brushing time and dentifrice quantity on fluoride delivery in vivo and enamel surface microhardness in situ[J]. Caries Res, 2010, 44: 90-100.
4Avsar A, Darka O, Bodrumlu E H, et al. Evaluation of the rela-tionship between passive smoking and salivary electrolytes, protein, secretory IgA, sialic acid and amylase in young children [ J ]. Arch Oral Biol, 2009, 54(5): 457-463.
5Brunekreef B, Beelen R, Hoek G, et al. Effects of long-term expo-sure to traffic-related air pollution on respiratory and cardiovascular mortality in the Netherlands: the NLCS-AIR study [ J ]. Res Rep Health Eft Inst, 2009,139 : 5-71 ; discussion 73 -89.
6Snoeck V, Peters I, Cox E. The IgA system : a comparison of struc- ture and function in different species[J]. Vet Res, 2006, 37(3) : 455 -467.
7Woof J, Kerr M. The function of immunoglobulin A in immunity[J]. Journal Pathol, 2006, 208 (2) : 270-282.
8Tomasi T B. Secretory immunoglobulins[ J]. N Engl J Med, 1972, 287 : 500-506.
9Hanson L, Korotkova M. The role of breastfeeding in prevention of neonatal infection [ J ]. Semin Neonatol, 2002,7 (4) : 275-281.
10Mestecky J, McGhee J. Immunoglobulin A ( IgA ) : molecular and cellular interactions involved in IgA biosynthesis and immune re- sponse[J]. Adv Immunol, 1987, 40: 153-160.