Assertion: lymphoblast's cell | /r/CapableOf | express large number
Facets:
value: typically
type: DEGREE
value: on their cell surface
type: LOCATION
Source sentences:
text: Healthy cells typically express a large number of self derived pMHC on their cell surface and although the T cell antigen receptor can interact with at least a subset of these self pMHC, the T cell generally ignores these healthy cells.