A new study has found that certain bacteria living in the nose may influence how likely someone is to get a COVID-19 infection. The research reveals that certain types of nasal bacteria can affect the ...

A new study suggests that elevated ACE2 and TMPRSS2 expression in the nasal cavity significantly increases the risk of future ...

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 ...