Assertion: tumor | /r/HasProperty | positive
Facets:
Source sentences:
text: This group includes tumors that are ER positive and PR positive, but negative for HER2.
text: This group includes tumors that are ER positive and PR positive, but negative for HER2.
text: This group includes tumors that are ER positive and PR positive, but negative for HER2.
text: This group includes tumors that are ER positive and PR positive, but negative for HER2.