Assertion: immune system's cell | /r/HasProperty | detected
Facets:
Source sentences:
text: Once a foreign cell or protein is detected, the immune system creates antibodies to fight the intruders, and sends special cells ('phagocytes') to eat them up.
text: Once a foreign cell or protein is detected, the immune system creates antibodies to fight the intruders, and sends special cells ('phagocytes') to eat them up.