Patients will be recruited in the respiratory department of University Hospital in Montpellier (France) from June 2012 to March 2014. All patients are asthmatics, in order to avoid any gender-related biases, investigators decided to include only women. All participants had normal range spirometry, specifically regarding forced expiratory volume. Each patient will undergo a bronchial provocation test coupled with a thoracic CT scan. Bronchial and alveolar Nitric Oxyde will also be measured, a blood sample will be obtained in order to measure biomarker concentrations, and the patients will be asked to answer the validated Asthma Control Questionnaire in order to quantify asthma control.