Table 2. The changes of cytokines expression in subjects before and after influenza vaccination.

Cytokine (pg/ml)	Before vaccination	After vaccination
IL-2	2.0 ± 1.9	3.2 ± 3.7
IL-4	3.1 ± 3.2	3.0 ± 3.7
IL-5	1.2 ± 0.6	1.2 ± 1.0
IL-10	6.1 ± 4.3	5.1 ± 7.4
IFN-γ	39.3 ± 54.1	35.1 ± 38.9
TNF-α	5.3 ± 15.6	5.5 ± 15.0
TGF-β	2859 ± 2711	4223 ± 3551a

^a p < 0.05