Assertion: rheumatoid arthritis's system | /r/AtLocation | overdrive
Facets:
Source sentences:
text: In most people diagnosed with RA, blood tests reveal abnormally high levels of antibodies called rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP), which signal that the immune system is in overdrive and may be attacking healthy tissues instead of just foreign invaders like germs.