<p><b>Copyright information:</b></p><p>Taken from "High synovial expression of the inhibitory FcγRIIb in rheumatoid arthritis"</p><p>http://arthritis-research.com/content/9/3/R51</p><p>Arthritis Research & Therapy 2007;9(3):R51-R51.</p><p>Published online 23 May 2007</p><p>PMCID:PMC2206344.</p><p></p> Rheumatoid arthritis synovial tissue showed overlapping expression of the macrophage marker CD163 with the expression of FcγRI (a), FcγRII (b), FcγRIIb (c) and FcγRIII (d). The majority of the CD163 positive macrophages expressed FcγRIIb. However, note that a CD163 positive cell lacked FcγRIIb expression. (Original magnification ×400.
