The CCP antibody test helps to diagnose RA and can be useful in identifying people with a more rapidly erosive form of the disease. RA is a chronic, systemic autoimmune disease that causes inflammation, pain, stiffness, and destructive changes in the hands, feet, and other joints throughout the body.
As you can see from the map above, most of the Illinois population is based in the North East of the state. Chicago, home to 2,695,598 people, remains the largest city in Illinois. It dwarfs the state's other cities â the next largest is Aurora, with 197,899 people.
The specifics: In the 2010 census, Illinois had a reported population of 12,831,574. The Land of Lincoln slowly clawed its way up to 12,879,505 in mid-2013, but now is down to 12,801,539 after losing more than 37,500 people in the past year. The loss here is the biggest of any state.