Table 2: The number of children in different age groups with serum IgG reactivity to different L. rhamnosus GG proteins. The age period when significantly more ( ) antibodies against bacterial proteins were observed compared to the 3-month age group is shown in bold.

L. rhamnosus GG antigenic proteins3-month6-month12-month24-month
IA-positiveIA-negativeIA-positiveIA-negativeIA-positiveIA-negativeIA-positiveIA-negative
( ) ( )( )( )( )( )( )( )

65 kDa 8 (44) 14 (78)14 (74) * 17 (89)17 (94) 17 (94) 15 (100)17 (94)
58 kDa 8 (44)12 (67)18 (95) 19 (100) 17 (94)17 (94)15 (100)18 (100)
49 kDa 2 (11)2 (11)2 (10)4 (21)6 (33)8 (44)4 (27) 7 (39)
47 kDa 4 (22)4 (22)8 (42)7 (37)9 (50)12 (67)7 (47)8 (44)
45 kDa 9 (50)11 (61)11 (58) 11 (58) 16 (89)14 (78)15 (100)18 (100)
42 kDa 3 (17)4 (22)5 (26)7 (37)9 (50)7 (39)8 (53)9 (50)
38 kDa 1 (5)3 (17)2 (10) 2 (10) 5 (28)5 (28)8 (53)8 (44)
31 kDa 13 (72)9 (50)14 (74)11 (58) 17 (94)17 (94)15 (100)16 (89)
27 kDa 0 (0)4 (22)1 (5)2 (10) 2 (11) 2 (11) 5 (33)6 (33)

 *Number and % (in brackets) of children with positive reactions to this protein.