The precise pathogenesis of NEC is elusive. For a brief review of GI anatomy and physiology, see Sidebar 2. As early as 1975, the triad of GI mucosal injury, presence of bacteria in the gut ...

Goyal at Beth Israel Hospital. His pioneering work using genetically altered mice models to understand basic gastrointestinal physiology has led to important understandings of the distinct roles ...

a: Gross anatomy of lung and thorax. b: Microscopic anatomy of bronchial wall. C: View of terminal airway and alveoli. d: Alveolar structure.