Assertion: tumor | /r/CapableOf | start in cell
Facets:
Source sentences:
text: Instead, these tumors start in the cells that would normally develop into the placenta during pregnancy.
text: Hemangiomas: Tumors that start in the cells lining blood vessels
text: Tumors starting in these cells are called oligodendrogliomas .
text: Tumors starting in these cells are called .
text: Tumors starting in these cells are called ependymomas.