Assertion: immune system's response | /r/HasProperty | based on memory
Facets:
Source sentences:
text: The immune system has two branches: innate immunity, an evolutionarily older system that continually scans the body and removes foreign invaders such as bacteria or viruses often by “eating” them in a process called phagocytosis; and adaptive immunity, which provides a more targeted and stronger response based on memory acquired from previous exposure to a pathogen.