The phenotype of all AM, regardless of their origin (n = 16 patients, with lung neoplasia (n = 6), sarcoidosis (n = 5) and SSc-ILD (n = 5)), plated for 24 h after BAL fluid recovery, was compared to MDMs from healthy blood donors, differentiated in the presence of GM-CSF (GM-MDMs) or M-CSF (M-MDMs) for 6 days. The gene discussed is CSF1; the disease is interstitial lung disease.