Table 7. IL-2 expression

Group	Melatonin (ng/㎎)
I	212.49 ± 11.50
II	297.60 ± 10.48#
III	290.04 ± 4.02

Data were represented as mean ± standard deviation
Signification difference as compared with untreated group (I) (P<0.05)
I : untreated group; II : treated with caffeine ; III : treated with caffeine and herb mixture