Qu Feng Xuan Bi Formula Alleviates Airway Inflammation and Guides Clinical Treatment by Improving Bronchial Immune Balance in the Asthma Model

Figure 2

Mass spectrometry for active ingredients. XIC (extracted ion current) in positive mode (a, c) and negative mode (b, d). (a, c) Compound standard. (b, d) QFXBF extract. 1: amygdalin (C₂₀H₂₇NO₁₁), 2: tectorigenin (C₁₆H₁₂O₆), 3: glycyrrhizic acid (C₄₂H₆₂O₁₆), and 4: osthole (C₁₅H₁₆O₃).

(a)

(b)

(c)

(d)