Table 4.

TGF-β protein level in bronchoalveolar lavage (μg/L).

Groups	Control	Model	Treatment
Week 1	89.23 ± 32.4	384.22 ± 78.2*	123.92 ± 34.14#
Week 2	92.87 ± 30.1	291.25 ± 89.27*	112.86 ± 21.28#
Week 4	90.34 ± 28.8	102.30 ± 23.21	119.63 ± 34.36

*P < 0.05, compared with the control group.

^# P < 0.05, compared with the model group.