TSLP-activated dendritic cells produce TH2-attracting chemokines (Soumelis et al. 2002) and then induce TH2 cell activation, initiating allergic inflammation by triggering IgE production, eosinophilia, and mucus production (Liu 2006; Liu and Frederick 2009). The gene discussed is TSLP; the disease is Increased total eosinophil count.