IL4 and asthma: The sensitised mice exhibited an increased expression of the Th2-like and asthma-associated cytokines, IL-4 (Figure 3A), IL-5 (Figure 3B), and IL-13 (Figure 3C), as well as mRNA encoding for pro-inflammatory TNF-α (Figure 3D) and the Th1 cytokine IFN-γ (Figure 3E).