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<p style="text-align: justify;">Aspergillus niger (A. niger), known as the black mold, is often found in damp places. Like other Aspergillus species, it can resist the human lung&#39;s defences. It is not as prevalent in the air as e.g. A. fumigatus. Inhalation of enzyme dust, such as cellulases from A. niger, is a commonly reported cause of occupational asthma. A. niger has been reported as one of the most important fungi causing mold skin test positivity among allergic asthma and rhinitis patients. The enzyme &szlig;-xylosidase derived from A. niger and present in baking additives, has been identified as a causative allergen in Baker&#39;s asthma. A. niger may also cause other types of allergy, allergic alveolitis and invasive aspergillosis. Although Aspergillus fumigatus is by far the most common cause of allergic bronchopulmonary aspergillosis (ABPA) A. niger can also lead to an identical disease.</p><ul><li>Postpone the process of testing immediately after paraclinical studies (roentgen, TC, MRI) and physiotherapy procedures. They can affect test results.</li></ul><ul><li>We recommend avoiding physical activity prior to your examination.</li></ul>