The advancements in the field of molecular medicine are changing respiratory medicine significantly. This book consists of the knowledge and experience of renowned scientists and clinicians from around the world. It will benefit aspiring clinicians and scientists about the current developments in a variety of lung ailments that will enable them to understand respiration related disorders. The book discusses issues related to pediatric respiratory ailments and immune regulation. This book will be valuable to clinicians to keep up with the latest concepts, to enhance their diagnostic skills, and to understand the potential new therapeutic applications in lung diseases.