Assertion: trephine biopsy | /r/HasProperty | obtained
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: Frequently, a trephine biopsy is also obtained, which yields a narrow, cylindrically shaped solid piece of bone marrow, 2 mm wide and 2 cm long (80 μL), which is examined microscopically (sometimes with the aid of immunohistochemistry) for cellularity and infiltrative processes.