The document appears to be a presentation on asthma given by Tenri A.W. in Yogyakarta, Indonesia on May 3rd, 2012. It discusses major concepts around asthma including what asthma is, why and how it happens, and who is behind the scenes. It defines asthma as a chronic inflammatory disease of the respiratory airways. It also discusses the role of mast cells in the activation and degranulation that causes asthma symptoms.