Assertion: monocyte | /r/HasProperty | formed in the bone marrow
Facets:
Source sentences:
text: Monocytes are formed in the bone marrow and are released into peripheral blood, where they circulate for several days.
text: The monocyte is formed in the bone marrow and transported by the blood; it migrates into the tissues, where it transforms into a histiocyte or a macrophage.