Assertion: lymphocyte's role | /r/HasProperty | critical
Facets:
value: to immune success
type: PURPOSE
Source sentences:
text: This role of NK cells is critical to immune success particularly because T cells are unable to recognize pathogens in the absence of surface antigens.
text: Furthermore, T lymphocytes play a critical role in the regulation of antimicrobial phagocytic and cytotoxic activity of the innate immune response cells .