Assertion: influenza virus | /r/CapableOf | infiltrate cell
Facets:
value: within lungs
type: LOCATION
value: within the throat
type: LOCATION
Source sentences:
text: Typically, humans only possess particular enzymes that are able to allow influenza viruses to infiltrate cells within the throat and lungs (cleavage of hemagglutinin) and therefore cannot infect other tissues or organs, however, more severely virulent strains such as H5N1 can also bind to receptors much deeper within the lungs, and as such are able to cause more severe symptoms including pneumonia – but is less easily 'coughed-out', compared to those that bind to the upper respiratory tracts which tend to be less severe.