Figure 5From: Secondhand smoke inhibits both Cl- and K+ conductances in normal human bronchial epithelial cells SHS does not appear to affect cAMP production or PKA activity. Whole-cell cAMP (A) and PKA activity (B) were measured as described in Materials and Methods. There was no statistically significant difference in cAMP production or PKA activity between sham and SHS-exposed HBECs.Back to article page