For telomere length quantification, telomeres were measured in lung sections from Tert+/+ and G3 Tert−/− mice by using an immuno‐telomere‐Q‐FISH to evaluate the mean telomere fluorescence (mean telomere spot intensity) and the percentage of short telomeres (corresponding to the 20th percentile of the telomere fluorescence intensity values of controls; PBS‐challenged Tert+/+ mice) in bronchial SCGB1A1+ Club cells (Figure 3p‐r), which have been previously shown to have a key role in allergic asthma (Sonar et al., 2012). Here, TERT is linked to allergic asthma.