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.
Chicago (United States of America) : The third largest city of United States in terms of population, only after New York and Los Angeles, Chicago is a home to more than 2.7 million people belonging to different cultures and ethnicities. It is the economic, educational, cultural and industrial epicenter of the state of America Midwest.