Assertion: nucleolus | /r/HasProperty | studied in nineteenth century
Facets:
value: much
type: DEGREE
Source sentences:
text: The nucleolus can be observed with the light microscope, and was much studied in the nineteenth century; its structure has more recently been clarified using the electron microscope.
text: The nucleolus can be observed with the light microscope, and was much studied in the nineteenth century; its structure has more recently been clarified using the electron microscope.