This book providesa practical approach to bronchoalveolar lavage (BAL) and its analyses, which are used worldwide in both research and clinical settings. It includes useful guidelines with a theoretic background and provides details on microscopic and flow cytometric measurements for all known differential diagnostics made with BAL analyses, from chronic diseases like COPD and ILD via infectious diseases to inherited illnesses like cystic fibrosis. It includes BAL in both adult and pediatr...