The esophagus and pharynx have been opened to show the connections of the nasal cavity, oral cavity, larynx, and esophagus into the pharynx. The arrow (b, bottom left) represents the path that ...

Machine learning and regression analysis models were also used to determine whether TMPRSS2 and ACE2 expression in the nasal cavity could predict COVID-19. Three regions were identified based on ...

Kai Zhao, a professor of nasal physiology at Ohio State University’s department of otolaryngology, wears a pair of nasal ...