Assertion: tumor's type | /r/CapableOf | call the megakaryocyte
Facets:
Source sentences:
text: Platelets are actually cell fragments made by a type of bone marrow cell called the megakaryocyte.
text: Platelets are actually cell fragments made by a type of bone marrow cell called a megakaryocyte.
text: are actually cell fragments made by a type of bone marrow cell called the megakaryocyte.