Figure 1 The expression of BDNF in HAECs of asthmatic children was higher than that in the healthy control group. (A) qRT-PCR was used to detect the mRNA expressions of BDNF in newly separated asthmatic HAECs and healthy control HAECs. (B) The protein expression of BDNF in asthmatic and healthy controls was measured through western blot. &&& P<0.001 versus HC, *** P<0.001 versus HC1, ^^^ P<0.001 versus HC2, ### P<0.001 versus HC3, n=3. BDNF – brain-derived neurotrophic factor; qRT-PCR – quantitative real-time reverse transcription polymerase chain reaction; mRNA – messenger RNA; HAECs – human airway epithelial cells; HC – healthy controls.