The expression of the MΦIFN-γ marker CD64, the positive MΦIL-4 marker CD200R, and the negative MΦIL-4 marker CD14 was similar in the synovial sublining of SpA and RA (Figure 1G through 1I) and was very low to absent in the intimal lining layer (data not shown). This evidence concerns the gene CD14 and rheumatoid arthritis.