HTR5A and pulmonary fibrosis: 2002; Konigshoff et al. 2010; Dees et al. 2011). In a different model, where pulmonary fibrosis was induced by intratracheal bleomycin administration, 5‐HT2A/2B receptor antagonist displayed effects on tissue remodeling (Konigshoff et al. 2010). Interestingly, 5‐HT has previously been described to promote tissue repair in liver (Nocito et al. 2007; Ebrahimkhani et al. 2011), highlighting the involvement in regenerative processes.