Age

18–80

Sex

ALL

Healthy volunteers

Accepted

COPD and asthma overlap
Use of systemic corticosteroids in the 3 months prior to the study
Respiratory infection or exacerbation in the 3 months prior to the study
Acute and chronic respiratory failure
Concomitant diagnoses: systemic connective tissue diseases, malignant neoplasms, severe and / or uncontrolled cardiovascular diseases
Use of immunosuppressive or immunomodulating drugs in the 3 months preceding the study
Contraindications to sputum induction
No consent to participate in the study

Phenotype Assessment of Blood and Airway Eosinophils in Patients With COPD and Asthma