Figure 1: Lymphocytes express hexokinase-2 in the synovium of patients with rheumatoid arthritis.

Synovial tissue was obtained from rheumatoid arthritis (RA) or osteoarthritis (OA) patients. OA (upper) and RA (lower) synovial tissue is shown. Synovium sections were stained with Hematoxylin and eosin (left; original magnification ×40). Synovium sections were stained with an anti-hexokinase-2 antibody (brown) and a nuclear stain (blue) (middle and right; original magnification ×100, ×400).