Table 5. Treg-related cytokines in BALF.

Cytokines	Con	ALI 6 h	ALI 24 h
IL-10 (pg/ml)	23.0 ± 2.6	14.6 ± 0.9**	7.5 ± 1.2**##
IL-2 (pg/ml)	14.5 ± 3.6	7.7 ± 1.5*	3.1 ± 2.1**#
IL-35 (pg/ml)	159.8 ± 3.3	133.7 ± 6.4	109.5 ± 5.8**

Con (normal control group, ambient air inhalation, n = 10), ALI 6 h (ALI group, smoke inhalation for 6 h, n = 10), ALI 24 h (ALI group, smoke inhalation for 24 h, n = 10); data are presented as mean ± S.E.M. *P < 0.05 and **P < 0.01 versus normal control group; ^#P < 0.05 and ^##P < 0.01 versus ALI 6 h group.