| arthritis and the immune system | 1.68 | 1 | 7301 | 31 | 85 |
| rheumatoid arthritis immune system | 1.09 | 0.3 | 3852 | 34 | 14 |
| rheumatoid arthritis affect the immune system | 1.52 | 0.5 | 3839 | 45 | 73 |
| rheumatoid arthritis and immune system | 1.88 | 0.3 | 963 | 38 | 35 |
| psoriatic arthritis immune system | 1.2 | 0.5 | 4095 | 33 | 97 |
| rheumatoid arthritis immune system disorder | 1.84 | 0.3 | 3845 | 43 | 82 |
| immune system arthritis | 1.01 | 0.5 | 5702 | 23 | 36 |
| rheumatoid arthritis weakened immune system | 0.56 | 0.8 | 1528 | 43 | 54 |
| auto immune system rheumatoid arthritis | 0.78 | 0.4 | 9680 | 39 | 35 |
| immune system disorders rheumatoid arthritis | 0.41 | 0.5 | 4026 | 44 | 50 |
