Fig. 4

Inhibition-ELISA analysis of serum antibodies binding to citrulline- and homocitrulline-containing type I and type II collagen telopeptides. Results are shown as percentage of inhibition in standard conditions. Mean +2 SD for 72 healthy control sera is indicated by the dotted line. MTP metatarsophalangeal, OA osteoarthritis, RA rheumatoid arthritis