The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and ...

Instead, they developed the spray and evaluated its ability to capture respiratory droplets using a 3D-printed model of the ...

Microbes that reside peaceably in the nasal passageways and on the skin can be harnessed for taking drugs to target cells.