Assertion: virus | /r/HasProperty | studied
Facets:
value: relatively little
type: DEGREE
Source sentences:
text: Several viruses have been studied, but multiple steps are required in order to show that a particular virus causes MS.
text: Because the virus has been a research subject for so long, it was used to develop fundamental ideas in virology.
text: Viruses in wild plants have been relatively little studied, but the interactions between wild plants and their viruses often do not appear to cause disease in the host plants.