RA STs contained a greater percentage of fut1 positive lining cells than did OA or NL STs; mean number of lining cells ± SEM; RA ST (n = 26) 13 ± 3%; OA ST (n = 22) 3 ± 1% and NL ST (n = 18) 0 ± 0%, P <0.05 between RA and OA ST; RA and NL ST (Figure 2C). This evidence concerns the gene FUT1 and rheumatoid arthritis.