What is the main cause of rheumatoid arthritis?

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Tags

1. #known
2. #viruses
3. #rheumatoid
4. #makes
5. #means
6. #healthy
7. #helping
8. #attack
9. #triggers
10. #caused
11. #however
12. #immune
13. #which
14. #attacking
15. #normally
16. #tissue
17. #condition
18. #system
19. #infection
20. #bacteria
21. #autoimmune
22. #antibodies
23. #fight
24. #arthritis