chapter 1 Historical Overview / chapter 2 Nomenclature and Genetic Variation of Pneumocystis / chapter 3 Pneumocystis Cellular Structure / chapter 4 Surface Antigens / chapter 5 Signal Transduction and Cellular Communication / chapter 6 Transmission and Epidemiology / chapter 7 Pneumocystis Genome Project and Genomic Organization / chapter 8 The Neonatal Period / chapter 9 Interactions of Pneumocystis with Alveolar Macrophages and Epithelial Cells / chapter 10 T Cells in Defense Against Pneumocystis / chapter 11 Cytokines / chapter 12 The Role of Humoral Immunity in the Defense Against Pneumocystis / chapter 13 The Pulmonary Surfactant System in Pneumocystis Pneumonia / chapter 14 Mechanisms of Lung Injury During Pneumocystis Pneumonia / chapter 15 Clinical Presentation and Diagnosis of Pneumocystis Pneumonia in HIV-Infected Patients / chapter 16 Pneumocystis Pneumonitis in Non-HIV-Infected Patients: / chapter 17 Pneumocystis jirovecii Pneumonia in AIDS Patients in the Developing World / chapter 18 Immunological Features of Pneumocystis Infection in Humans / chapter 19 Molecular Typing and Epidemiological Insights / chapter 20 Current Regimens for Treatment and Prophylaxis of Pneumocystis jirovecii Pneumonia / chapter 21 Lipids / chapter 22 Polyamines, Iron, and Pneumocystis carinii / chapter 23 DHFR and IMPDH: Enzymes Exploitable as Drug Targets in Pneumocystis / chapter 24 Dihydropteroate Synthase and Cytochrome B: The Problem of Emerging Resistance / chapter 25 Development of Candidate Anti-Pneumocystis Drugs: In Vitro and In Vivo Approaches