FN1 and asthma: Compared to unstimulated ASMC, IgE-induced fibronectin deposition was increased by 176.3 ± 14.4% after 24 h and by 206.5 ± 18.4% after 48 h, as shown in Figure 2C. No difference was observed comparing IgE induced collagen and fibronectin deposition in ASMC obtained from asthma patients and controls.