Fig. 5From: Increased expression of transient receptor potential channels and neurogenic factors associates with cough severity in a guinea pig modelChanges in concentrations of neurotrophic factors in lung tissue homogenates. Changes in the concentrations of NKA (a), NKB (b), NGF (c), and BDNF (d) in lung tissue homogenate samples, as measured by ELISA (n = 7–8 animals/group/ per time point). The data are expressed as the mean ± SD. *P < 0.05Back to article page