Assertion: immune system's cell | /r/CapableOf | live for long time
Facets:
Source sentences:
text: This is accomplished by the generation of 'memory' cells that live for a long time, waiting for their chance to re-activate and lead the charge.
text: This is accomplished by the generation of 'memory' cells that live for a long time, waiting for their chance to re-activate and lead the charge.