MAIN OUTCOME MEASURES:The number and the distribution of HLA DR+,S 100+and CD1a+cells in synovial membranes were investigated with immunohistochemical staining.

• 主要观察指标:两组患者滑膜中HLA-DR抗原阳性表达细胞、S-100阳性和CD1a阳性的DC的多少和分布情况。