Assertion: immune system's cell | /r/CapableOf | alert other cells
Facets:
value: to the immune system
type: TRANSITIVE-OBJECT
value: to the infection
type: TRANSITIVE-OBJECT
Source sentences:
text: When a virus infects a cell, the cell releases cytokines to alert other cells to the infection.
text: Each cell wears a collection of MHC–antigens on its surface that act as bar codes, identifying that cell to the immune system.