5. Mucosal BarriersFish can interact with their surroundings through mucosal barriers while still maintaining homeostasis. Mucosal barriers (Figure 1) are extremely complex tissues with special adaptations that enhance a variety of physiological functions, including immunity, gas exchange, and nutrition. interact 상호작용하다homeostasis 항상성 physiological 생리학적으로 The principal mucosa-associated lympho..