Assertion: brain tumor's brain | /r/HasAspect | 4 grades
Facets:
value: typically
type: DEGREE
Source sentences:
text: Brain and spinal cord tumors are typically divided into 4 grades (using Roman numerals I to IV), based largely on how the tumor cells look under a microscope.
text: Brain and spinal cord tumors are typically divided into 4 grades (using Roman numerals I to IV), based largely on how the tumor cells look under a microscope: