TREM-1 expression is increased in the synovium of rheumatoid arthritis patients and induces the expression of pro-inflammatory cytokines. por Kuai, J, Gregory, B, Hill, A, Pittman, D, Feldman, J, Brown, T, Carito, B, O'Toole, M, Ramsey, R, Adolfsson, O, Shields, K, Dower, K, Hall, J, Kurdi, Y, Beech, J, Nanchahal, J, Feldmann, M, Foxwell, B, Brennan, F, Winkler, D, Lin, L