Rheumatoid arthritis: features

RHEUMATOID:
Ragocytes/ Rheumatoid factor (anti-IgG)
HLA-DR4/ HLA-Dw4
ESR increase/ Extra-articular features (restrictive lung disease, subcutaneous nodules)
Ulnar deviation
Morning stiffness/ MCP joint
Ankylosis/ Atlantoaxial joint subluxation/ Autoimmune/ ANA
T-cells (CD4)/ TNF
Osteopenia
Inflammatory synovial tissue/ Idiopathic/ IL-1
Deformities (swan-neck, boutonniere)