IFNG and acute respiratory distress syndrome: Study showed that the presence of mucosa‐associated lymphoid tissue plays a crucial role in immune responses, stimulating the production of IFN‐γ and TH1 cytokines, or promoting anti‐inflammatory cytokine production by Th2 lymphocytes.[36] These immune mechanisms, however, were not addressed in this study, which could limit a comprehensive understanding of how microbiome‐based treatments like FMT might influence immune regulation in ARDS patients.