Figure 1. Expression analysis of vimentin, gelsolin, AHSG, GFAP and A1BG autoantigens by Western blotting.

Synovial fluid of various RA (R1–R6) and OA (O1–O4) patients were separated on SDS-PAGE and Western blotted with (A) anti-vimentin, (B) anti-gelsolin, (C) anti-alpha 2HS glycoprotein, (D) anti-glial fibrillary acidic protein E) anti-alpha 1-B glycol protein antibody. The densitometry analysis is shown as bar diagram (right panels) and the OA patientś synovial fluids served as control sample.