Assertion: histocompatibility antigen | /r/HasProperty | generated within normal cells
Facets:
value: previously
type: TEMPORAL
Source sentences:
text: Endogenous antigens are generated within normal cells as a result of normal cell metabolism, or because of viral or intracellular bacterial infection.
text: Endogenous antigens are antigens that have been generated within previously normal cells as a result of normal cell metabolism , or because of viral or intracellular bacterial infection .