主题词：Nitric Oxide and Endothelin Effects; Sulfur Compounds in Biology; Eicosanoids and Hypertension Pharmacology; Diverse Scientific and Economic Studies; Neuroscience of respiration and sleep; Human auditory perception and evaluation; Renin-Angiotensin System Studies; Electron Spin Resonance Studies; Hemoglobin structure and function; Neutrophil, Myeloperoxidase and Oxidative Mechanisms; Redox biology and oxidative stress; Educational Robotics and Engineering; Cardiac Ischemia and Reperfusion; Cancer, Hypoxia, and Metabolism; Legal Cases and Commentary; Heme Oxygenase-1 and Carbon Monoxide; Amino Acid Enzymes and Metabolism; Hydrogen's biological and therapeutic effects; Adipose Tissue and Metabolism; Asthma and respiratory diseases; Cardiovascular and exercise physiology; Plant Stress Responses and Tolerance; Folate and B Vitamins Research; High Altitude and Hypoxia; Biochemical effects in animals