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.
Between 2000 and 2010, the population of Illinois grew by a mere 3.3% , compared to a national average US population growth of 9.7%. The population of Illinois in 2013 is 12,897,625, making Illinois the fifth largest state in the USA. This is based on a growth rate of 0.17%, which ranks 44th.