Assertion: lymphocyte | /r/HasProperty | formed in the bone marrow
Facets:
value: as those
type: OTHER
value: from the same cells
type: OTHER
Source sentences:
text: Both types are formed in the bone marrow, but B cells mature in the bone marrow and T cells mature in the thymus.
text: They are formed in the bone marrow from the same cells as those that produce neutrophils.