Assertion: psoriasis's system | /r/HasProperty | involved
Facets:
Source sentences:
text: But experts do know that the body's immune system, which fights germs and diseases, is involved.
text: But experts do know that the body's immune system, which fights germs and diseases, is involved.
text: But doctors think genes and the immune system are involved.
text: The exact causes of psoriasis remain unknown at present, but experts do know that the immune system and genetic factors are involved.