Table 2.

Airway pathological features in a rat bronchial asthma model and effect of YPG treatment

Group	Area to circumference ratio of the endobronchial tube (μm2/μm)	Rate of thickness to the boundary of smooth muscle (μm2/μm)
Healthy control	5.24±0.35	2.46±0.20
Model	13.64±0.92**	8.52±0.49**
YPG H	6.84±1.20##	4.24±0.89##
YPG M	7.63±0.40##	4.71±0.23##
YPG L	8.88±0.34##	6.34±0.13##
Positive control	7.14±0.42##	4.76±0.30##

Notes: Data are presented as the mean±SD. n=8 per group.

^**P<0.01, vs healthy control group;

^##P<0.01, vs model; group H= high-dose, M= middle-dose, L= low-dose.

Abbreviation: YPG, Yanghe Pingchuan granules.