Assertion: bone marrow | /r/CapableOf | undergo maturation
Facets:
value: in these organs
type: LOCATION
Source sentences:
text: The thymus and the bone marrow are primary lymphoid organs as T and B cells must first undergo maturation in these organs/tissues before migrating to the secondary lymphoid tissues, such as the spleen, lymph nodes and mucosa associated lymphoid tissues (MALT).