Figure 1From: Long-term effects of three Tiao-Bu Fei-Shen therapies on NF-κB/TGF-β1/smad2 signaling in rats with chronic obstructive pulmonary disease Pathological changes in the lungs and bronchiole in rats treated with Bufei Jianpi, Bufei Yishen, Yiqi Zishen granules or aminophylline at week 20 and 32 ( H&E stained). a = control, b = model; c = Bufei Jianpi; d= Bufei Yishen; e = Yiqi Zishen; f = aminophylline. 1 = week 20; 2 = week 32. Amplification ×200.Back to article page