Assertion: rheumatic fever's edge | /r/CapableOf | become stiff
Facets:
Source sentences:
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.
text: As a valve heals, its edges may become so scarred and stiff that they fail to close properly.