Moreover, expression of key regulators of embryonic lung morphogenesis, Fgf9 and Fgf10 (Colvin et al., 2001; Min et al., 1998; White et al., 2006), has been shown to trigger ADC and adenoma progression, respectively (Clark et al., 2001; Yin et al., 2013). This evidence concerns the gene FGF10 and adenoma.