Assertion: immune system | /r/CapableOf | release protein
Facets:
value: to alert other cells
type: PURPOSE
value: during sleep
type: TEMPORAL
Source sentences:
text: During sleep, the immune system releases proteins called cytokines.
text: When a foreign pathogen invades, interferons act like "first responders"; the immune system releases these proteins to alert other cells that there's a pathogen in the body.