Microscopic anatomical, immunohistochemical, and morphometric characterization of the terminal airways of the lung in cetaceans

The lungs of cetaceans undergo anatomical and physiological adaptations that facilitate extended breath‐holding during dives. Here, we present new insights on the ontogeny of the microscopic anatomy of the terminal portion of the airways of the lungs in five cetacean species: the fin whale ( Balaenoptera physalus ); the sperm whale ( Physeter macrocephalus ), the Cuvier's beaked whale ( Ziphius cavirostris ); the bottlenose dolphin ( Tursiops...