Assertion: lymphoblast's cell | /r/HasProperty | rare
Facets:
value: in the marrow.52
type: LOCATION
Source sentences:
text: These cells are designated CD5 B cells, or, more recently, B-1 B cells.47 B-1 B cells do not express other T-cell markers but do express all other pan-B-cell surface antigens.48 B-cell expression of CD5 can be modulated by various agents.49,50 B-1 B cells are found in umbilical cord blood,51 adult blood, the pleura and peritoneum, and all major secondary lymphoid organs but are rare in the marrow.52